New version of prosody has modules directories unreadable to users. prosody process run as prosody user and cannot access to these modules. As a consequence, prosody service starts but is broken.

Directories are:
$ tar tvf prosody-0.9.5-1-x86_64.pkg.tar.xz|grep drwxr-x---
drwxr-x--- root/root 0 2014-10-09 14:50 usr/lib/prosody/modules/storage/
drwxr-x--- root/root 0 2014-10-09 14:50 usr/lib/prosody/modules/mod_s2s/
drwxr-x--- root/root 0 2014-10-09 14:50 usr/lib/prosody/modules/muc/
drwxr-x--- root/root 0 2014-10-09 14:50 usr/lib/prosody/modules/adhoc/
drwxr-x--- root/root 0 2014-10-09 14:50 var/lib/prosody/

You got this kind of errors as result:
oct. 12 00:25:00 achille.seblu.net prosody[521]: modulemanager: Error initializing module 'uptime' on 'seblu.net': /usr/lib/prosody/core/moduleapi.lua:121: Failed to load plugin library 'adhoc', error: /usr/lib/prosody/modules/adhoc.lib.lu
stack traceback:
/usr/lib/prosody/core/modulemanager.lua:29: in function </usr/lib/prosody/core/modulemanager.lua:29>
[C]: in function 'error'
/usr/lib/prosody/core/moduleapi.lua:121: in function 'require'
/usr/lib/prosody/modules/mod_uptime.lua:26: in main chunk
(tail call): ?
[C]: in function 'xpcall'
/usr/lib/prosody/core/modulemanager.lua:29: in function 'pcall'
/usr/lib/prosody/core/modulemanager.lua:171: in function 'do_load_module'
/usr/lib/prosody/core/modulemanager.lua:249: in function 'load'
/usr/lib/prosody/core/modulemanager.lua:74: in function '?'
/usr/lib/prosody/util/events.lua:67: in function 'fire_event'
/usr/lib/prosody/core/hostmanager.lua:98: in function 'activate'
/usr/lib/prosody/core/hostmanager.lua:44: in function '?'
/usr/lib/prosody/util/events.lua:67: in function 'fire_event'
/usr/lib/prosody/../../bin/prosody:337: in function 'prepare_to_start'
/usr/lib/prosody/../../bin/prosody:403: in main chunk
[C]: ?