jason@jason-laptop ~ % sudo pacman -Syu --debug         
debug: pacman v4.1.1 - libalpm v8.0.1
debug: parseconfig: options pass
debug: config: attempting to read file /etc/pacman.conf
debug: config: finish section '(null)'
debug: config: new section 'options'
debug: config: HoldPkg: pacman
debug: config: HoldPkg: glibc
debug: config: arch: x86_64
debug: config: SigLevel: Required
debug: config: SigLevel: DatabaseOptional
debug: config: LocalFileSigLevel: Optional
debug: config: finish section 'options'
debug: config: new section 'core'
debug: config file /etc/pacman.conf, line 75: including /etc/pacman.d/mirrorlist
debug: config: attempting to read file /etc/pacman.d/mirrorlist
debug: config: finished parsing /etc/pacman.d/mirrorlist
debug: config: finish section 'core'
debug: config: new section 'extra'
debug: config file /etc/pacman.conf, line 78: including /etc/pacman.d/mirrorlist
debug: config: attempting to read file /etc/pacman.d/mirrorlist
debug: config: finished parsing /etc/pacman.d/mirrorlist
debug: config: finish section 'extra'
debug: config: new section 'community'
debug: config file /etc/pacman.conf, line 84: including /etc/pacman.d/mirrorlist
debug: config: attempting to read file /etc/pacman.d/mirrorlist
debug: config: finished parsing /etc/pacman.d/mirrorlist
debug: config: finish section 'community'
debug: config: finished parsing /etc/pacman.conf
debug: setup_libalpm called
debug: option 'logfile' = /var/log/pacman.log
debug: option 'gpgdir' = /etc/pacman.d/gnupg/
debug: option 'cachedir' = /var/cache/pacman/pkg/
debug: parseconfig: repo pass
debug: config: attempting to read file /etc/pacman.conf
debug: config: finish section '(null)'
debug: config: new section 'options'
debug: config: finish section 'options'
debug: config: new section 'core'
debug: config file /etc/pacman.conf, line 75: including /etc/pacman.d/mirrorlist
debug: config: attempting to read file /etc/pacman.d/mirrorlist
debug: config: finished parsing /etc/pacman.d/mirrorlist
debug: config: finish section 'core'
debug: registering sync database 'core'
debug: database path for tree core set to /var/lib/pacman/sync/core.db
debug: "/var/lib/pacman/sync/core.db.sig" is not readable: No such file or directory
debug: sig path /var/lib/pacman/sync/core.db.sig could not be opened
debug: missing optional signature
debug: adding new server URL to database 'core': http://mirror.de.leaseweb.net/archlinux/core/os/x86_64
debug: config: new section 'extra'
debug: config file /etc/pacman.conf, line 78: including /etc/pacman.d/mirrorlist
debug: config: attempting to read file /etc/pacman.d/mirrorlist
debug: config: finished parsing /etc/pacman.d/mirrorlist
debug: config: finish section 'extra'
debug: registering sync database 'extra'
debug: database path for tree extra set to /var/lib/pacman/sync/extra.db
debug: "/var/lib/pacman/sync/extra.db.sig" is not readable: No such file or directory
debug: sig path /var/lib/pacman/sync/extra.db.sig could not be opened
debug: missing optional signature
debug: adding new server URL to database 'extra': http://mirror.de.leaseweb.net/archlinux/extra/os/x86_64
debug: config: new section 'community'
debug: config file /etc/pacman.conf, line 84: including /etc/pacman.d/mirrorlist
debug: config: attempting to read file /etc/pacman.d/mirrorlist
debug: config: finished parsing /etc/pacman.d/mirrorlist
debug: config: finish section 'community'
debug: registering sync database 'community'
debug: database path for tree community set to /var/lib/pacman/sync/community.db
debug: "/var/lib/pacman/sync/community.db.sig" is not readable: No such file or directory
debug: sig path /var/lib/pacman/sync/community.db.sig could not be opened
debug: missing optional signature
debug: adding new server URL to database 'community': http://mirror.de.leaseweb.net/archlinux/community/os/x86_64
debug: config: finished parsing /etc/pacman.conf
:: Synchronizing package databases...
debug: url: http://mirror.de.leaseweb.net/archlinux/core/os/x86_64/core.db
debug: maxsize: 26214400
debug: using time condition: 1370227821
debug: opened tempfile for download: /var/lib/pacman/sync/core.db.part (wb)
debug: curl returned error 0 from transfer
debug: response code: 304
debug: file met time condition
 core is up to date
debug: url: http://mirror.de.leaseweb.net/archlinux/extra/os/x86_64/extra.db
debug: maxsize: 26214400
debug: using time condition: 1370123804
debug: opened tempfile for download: /var/lib/pacman/sync/extra.db.part (wb)
downloading extra.db...
^Cdebug: curl returned error 42 from transfer

Interrupt signal received
debug: returning error 24 from alpm_trans_interrupt : transaction not initialized
debug: returning error 24 from alpm_trans_release : transaction not initialized

debug: unregistering database 'local'
debug: unregistering database 'core'
debug: unregistering database 'extra'
debug: unregistering database 'community'
jason@jason-laptop ~ % 
jason@jason-laptop ~ % sudo pacman -Syu --debug
debug: pacman v4.1.1 - libalpm v8.0.1
debug: parseconfig: options pass
debug: config: attempting to read file /etc/pacman.conf
debug: config: finish section '(null)'
debug: config: new section 'options'
debug: config: HoldPkg: pacman
debug: config: HoldPkg: glibc
debug: config: arch: x86_64
debug: config: SigLevel: Required
debug: config: SigLevel: DatabaseOptional
debug: config: LocalFileSigLevel: Optional
debug: config: finish section 'options'
debug: config: new section 'core'
debug: config file /etc/pacman.conf, line 75: including /etc/pacman.d/mirrorlist
debug: config: attempting to read file /etc/pacman.d/mirrorlist
debug: config: finished parsing /etc/pacman.d/mirrorlist
debug: config: finish section 'core'
debug: config: new section 'extra'
debug: config file /etc/pacman.conf, line 78: including /etc/pacman.d/mirrorlist
debug: config: attempting to read file /etc/pacman.d/mirrorlist
debug: config: finished parsing /etc/pacman.d/mirrorlist
debug: config: finish section 'extra'
debug: config: new section 'community'
debug: config file /etc/pacman.conf, line 84: including /etc/pacman.d/mirrorlist
debug: config: attempting to read file /etc/pacman.d/mirrorlist
debug: config: finished parsing /etc/pacman.d/mirrorlist
debug: config: finish section 'community'
debug: config: finished parsing /etc/pacman.conf
debug: setup_libalpm called
debug: option 'logfile' = /var/log/pacman.log
debug: option 'gpgdir' = /etc/pacman.d/gnupg/
debug: option 'cachedir' = /var/cache/pacman/pkg/
debug: parseconfig: repo pass
debug: config: attempting to read file /etc/pacman.conf
debug: config: finish section '(null)'
debug: config: new section 'options'
debug: config: finish section 'options'
debug: config: new section 'core'
debug: config file /etc/pacman.conf, line 75: including /etc/pacman.d/mirrorlist
debug: config: attempting to read file /etc/pacman.d/mirrorlist
debug: config: finished parsing /etc/pacman.d/mirrorlist
debug: config: finish section 'core'
debug: registering sync database 'core'
debug: database path for tree core set to /var/lib/pacman/sync/core.db
debug: "/var/lib/pacman/sync/core.db.sig" is not readable: No such file or directory
debug: sig path /var/lib/pacman/sync/core.db.sig could not be opened
debug: missing optional signature
debug: adding new server URL to database 'core': http://mirror.de.leaseweb.net/archlinux/core/os/x86_64
debug: config: new section 'extra'
debug: config file /etc/pacman.conf, line 78: including /etc/pacman.d/mirrorlist
debug: config: attempting to read file /etc/pacman.d/mirrorlist
debug: config: finished parsing /etc/pacman.d/mirrorlist
debug: config: finish section 'extra'
debug: registering sync database 'extra'
debug: database path for tree extra set to /var/lib/pacman/sync/extra.db
debug: "/var/lib/pacman/sync/extra.db.sig" is not readable: No such file or directory
debug: sig path /var/lib/pacman/sync/extra.db.sig could not be opened
debug: missing optional signature
debug: adding new server URL to database 'extra': http://mirror.de.leaseweb.net/archlinux/extra/os/x86_64
debug: config: new section 'community'
debug: config file /etc/pacman.conf, line 84: including /etc/pacman.d/mirrorlist
debug: config: attempting to read file /etc/pacman.d/mirrorlist
debug: config: finished parsing /etc/pacman.d/mirrorlist
debug: config: finish section 'community'
debug: registering sync database 'community'
debug: database path for tree community set to /var/lib/pacman/sync/community.db
debug: "/var/lib/pacman/sync/community.db.sig" is not readable: No such file or directory
debug: sig path /var/lib/pacman/sync/community.db.sig could not be opened
debug: missing optional signature
debug: adding new server URL to database 'community': http://mirror.de.leaseweb.net/archlinux/community/os/x86_64
debug: config: finished parsing /etc/pacman.conf
:: Synchronizing package databases...
debug: url: http://mirror.de.leaseweb.net/archlinux/core/os/x86_64/core.db
debug: maxsize: 26214400
debug: using time condition: 1370227821
debug: opened tempfile for download: /var/lib/pacman/sync/core.db.part (wb)
debug: curl returned error 0 from transfer
debug: response code: 304
debug: file met time condition
 core is up to date
^C
Interrupt signal received
debug: returning error 24 from alpm_trans_interrupt : transaction not initialized
debug: returning error 24 from alpm_trans_release : transaction not initialized

debug: unregistering database 'local'
debug: unregistering database 'core'
debug: unregistering database 'extra'
debug: unregistering database 'community'
jason@jason-laptop ~ % sudo pacman -Syu --debug
debug: pacman v4.1.1 - libalpm v8.0.1
debug: parseconfig: options pass
debug: config: attempting to read file /etc/pacman.conf
debug: config: finish section '(null)'
debug: config: new section 'options'
debug: config: HoldPkg: pacman
debug: config: HoldPkg: glibc
debug: config: arch: x86_64
debug: config: SigLevel: Required
debug: config: SigLevel: DatabaseOptional
debug: config: LocalFileSigLevel: Optional
debug: config: finish section 'options'
debug: config: new section 'core'
debug: config file /etc/pacman.conf, line 75: including /etc/pacman.d/mirrorlist
debug: config: attempting to read file /etc/pacman.d/mirrorlist
debug: config: finished parsing /etc/pacman.d/mirrorlist
debug: config: finish section 'core'
debug: config: new section 'extra'
debug: config file /etc/pacman.conf, line 78: including /etc/pacman.d/mirrorlist
debug: config: attempting to read file /etc/pacman.d/mirrorlist
debug: config: finished parsing /etc/pacman.d/mirrorlist
debug: config: finish section 'extra'
debug: config: new section 'community'
debug: config file /etc/pacman.conf, line 84: including /etc/pacman.d/mirrorlist
debug: config: attempting to read file /etc/pacman.d/mirrorlist
debug: config: finished parsing /etc/pacman.d/mirrorlist
debug: config: finish section 'community'
debug: config: finished parsing /etc/pacman.conf
debug: setup_libalpm called
debug: option 'logfile' = /var/log/pacman.log
debug: option 'gpgdir' = /etc/pacman.d/gnupg/
debug: option 'cachedir' = /var/cache/pacman/pkg/
debug: parseconfig: repo pass
debug: config: attempting to read file /etc/pacman.conf
debug: config: finish section '(null)'
debug: config: new section 'options'
debug: config: finish section 'options'
debug: config: new section 'core'
debug: config file /etc/pacman.conf, line 75: including /etc/pacman.d/mirrorlist
debug: config: attempting to read file /etc/pacman.d/mirrorlist
debug: config: finished parsing /etc/pacman.d/mirrorlist
debug: config: finish section 'core'
debug: registering sync database 'core'
debug: database path for tree core set to /var/lib/pacman/sync/core.db
debug: "/var/lib/pacman/sync/core.db.sig" is not readable: No such file or directory
debug: sig path /var/lib/pacman/sync/core.db.sig could not be opened
debug: missing optional signature
debug: adding new server URL to database 'core': http://mirror.de.leaseweb.net/archlinux/core/os/x86_64
debug: config: new section 'extra'
debug: config file /etc/pacman.conf, line 78: including /etc/pacman.d/mirrorlist
debug: config: attempting to read file /etc/pacman.d/mirrorlist
debug: config: finished parsing /etc/pacman.d/mirrorlist
debug: config: finish section 'extra'
debug: registering sync database 'extra'
debug: database path for tree extra set to /var/lib/pacman/sync/extra.db
debug: "/var/lib/pacman/sync/extra.db.sig" is not readable: No such file or directory
debug: sig path /var/lib/pacman/sync/extra.db.sig could not be opened
debug: missing optional signature
debug: adding new server URL to database 'extra': http://mirror.de.leaseweb.net/archlinux/extra/os/x86_64
debug: config: new section 'community'
debug: config file /etc/pacman.conf, line 84: including /etc/pacman.d/mirrorlist
debug: config: attempting to read file /etc/pacman.d/mirrorlist
debug: config: finished parsing /etc/pacman.d/mirrorlist
debug: config: finish section 'community'
debug: registering sync database 'community'
debug: database path for tree community set to /var/lib/pacman/sync/community.db
debug: "/var/lib/pacman/sync/community.db.sig" is not readable: No such file or directory
debug: sig path /var/lib/pacman/sync/community.db.sig could not be opened
debug: missing optional signature
debug: adding new server URL to database 'community': http://mirror.de.leaseweb.net/archlinux/community/os/x86_64
debug: config: finished parsing /etc/pacman.conf
:: Synchronizing package databases...
debug: returning error 10 from alpm_db_update : unable to lock database
error: failed to update core (unable to lock database)
debug: returning error 10 from alpm_db_update : unable to lock database
error: failed to update extra (unable to lock database)
debug: returning error 10 from alpm_db_update : unable to lock database
error: failed to update community (unable to lock database)
error: failed to synchronize any databases
error: failed to init transaction (unable to lock database)
error: could not lock database: File exists
  if you're sure a package manager is not already
  running, you can remove /var/lib/pacman/db.lck
debug: unregistering database 'local'
debug: unregistering database 'core'
debug: unregistering database 'extra'
debug: unregistering database 'community'
jason@jason-laptop ~ % 
jason@jason-laptop ~ %