Hi,
i wanted to mount an GMX-Webdav. Therefor i installed the package davfs2.
The /etc/davfs2/davfs2.conf is except for #userproxyand the #IP of the proxy default.

The mounting process fails and gives back an "memory map":

-----------------------------------------------------
pacman -Qi davfs2
Name : davfs2
Version : 1.3.0-1
URL : http://dav.sourceforge.net
Licenses : GPL
Groups : None
Provides : None
Depends On : neon>=0.27.2
Optional Deps : None
Required By : None
Conflicts With : None
Replaces : None
Installed Size : 296.69 K
Packager : Thomas Baechler <thomas@archlinux.org>
Architecture : i686
Build Date : Sat Mar 15 11:39:28 2008
Install Date : Tue May 13 13:53:55 2008
Install Reason : Explicitly installed
Install Script : Yes
Description : File system driver that allows you to mount a WebDAV server as a local disk drive.
-----------------------------------------------------


-----------------------------------------------------
[root@host ~]# mount -t davfs https://mediacenter.gmx.net/ /home/<user/>/GMX
Please enter the username to authenticate with server
https://mediacenter.gmx.net/ or hit enter for none.
Username: /<user/>
Please enter the password to authenticate user /<user/>.de with server
https://mediacenter.gmx.net/ or hit enter for none.
Password:
/sbin/mount.davfs: the server certificate is not trusted
issuer: Certification Services Division, Thawte Consulting cc, Cape Town, Western Cape, ZA
subject: GMX GmbH, Munich, Bayern, DE
identity: mediacenter.gmx.net
fingerprint: bc:ae:bd:ad:23:dd:d4:60:24:38:90:fa:1b:a4:1a:40:90:81:1d:76
You only should accept this certificate, if you can
verify the fingerprint! The server might be faked
or there might be a man-in-the-middle-attack.
Accept certificate for this session? [y,N] y

* glibc detected *** /sbin/mount.davfs: double free or corruption (fasttop): 0x08068490 ***
o glibc detected *** /sbin/mount.davfs: double free or corruption (fasttop): 0x08068490 ***

= Backtrace: ===
/lib/libc.so.6[0xb7acbc64]
/lib/libc.so.6(cfree+0x9c)[0xb7acdb4c]
/sbin/mount.davfs[0x8058c1d]
/sbin/mount.davfs[0x805df91]
/lib/libc.so.6(__libc_start_main+0xe6)[0xb7a77396]
/sbin/mount.davfs[0x804b541]
= Memory map: ==
08048000-08066000 r-xp 00000000 08:01 400772 /usr/sbin/mount.davfs
08066000-08067000 rw-p 0001d000 08:01 400772 /usr/sbin/mount.davfs
08067000-080ce000 rw-p 08067000 00:00 0 [heap]
b7900000-b7921000 rw-p b7900000 00:00 0
b7921000-b7a00000 ---p b7921000 00:00 0
b7a54000-b7a5d000 r-xp 00000000 08:01 587571 /lib/libnss_files-2.7.so
b7a5d000-b7a5f000 rw-p 00008000 08:01 587571 /lib/libnss_files-2.7.so
b7a5f000-b7a61000 rw-p b7a5f000 00:00 0
b7a61000-b7b9b000 r-xp 00000000 08:01 587546 /lib/libc-2.7.so
b7b9b000-b7b9c000 r--p 0013a000 08:01 587546 /lib/libc-2.7.so
b7b9c000-b7b9e000 rw-p 0013b000 08:01 587546 /lib/libc-2.7.so
b7b9e000-b7ba1000 rw-p b7b9e000 00:00 0
b7ba1000-b7bb5000 r-xp 00000000 08:01 587542 /lib/libpthread-2.7.so
b7bb5000-b7bb7000 rw-p 00013000 08:01 587542 /lib/libpthread-2.7.so
b7bb7000-b7bb9000 rw-p b7bb7000 00:00 0
b7bb9000-b7bd7000 r-xp 00000000 08:01 395317 /usr/lib/libexpat.so.1.5.2
b7bd7000-b7bd9000 rw-p 0001e000 08:01 395317 /usr/lib/libexpat.so.1.5.2
b7bd9000-b7be8000 r-xp 00000000 08:01 587545 /lib/libresolv-2.7.so
b7be8000-b7bea000 rw-p 0000e000 08:01 587545 /lib/libresolv-2.7.so
b7bea000-b7bec000 rw-p b7bea000 00:00 0
b7bec000-b7bf5000 r-xp 00000000 08:01 587544 /lib/libcrypt-2.7.so
b7bf5000-b7bf7000 rw-p 00008000 08:01 587544 /lib/libcrypt-2.7.so
b7bf7000-b7c1f000 rw-p b7bf7000 00:00 0
b7c1f000-b7c30000 r-xp 00000000 08:01 397282 /usr/lib/libroken.so.18.1.0
b7c30000-b7c31000 rw-p 00010000 08:01 397282 /usr/lib/libroken.so.18.1.0
b7c31000-b7ca4000 r-xp 00000000 08:01 397284 /usr/lib/libasn1.so.8.0.0
b7ca4000-b7ca7000 rw-p 00072000 08:01 397284 /usr/lib/libasn1.so.8.0.0
b7ca7000-b7ca9000 r-xp 00000000 08:01 587651 /lib/libcom_err.so.2.1
b7ca9000-b7caa000 rw-p 00001000 08:01 587651 /lib/libcom_err.so.2.1
b7caa000-b7cda000 r-xp 00000000 08:01 397271 /usr/lib/libhx509.so.1.1.0
b7cda000-b7cdc000 rw-p 0002f000 08:01 397271 /usr/lib/libhx509.so.1.1.0
b7cdc000-b7d35000 r-xp 00000000 08:01 397255 /usr/lib/libkrb5.so.22.1.0
b7d35000-b7d38000 rw-p 00059000 08:01 397255 /usr/lib/libkrb5.so.22.1.0
b7d38000-b7d3c000 r-xp 00000000 08:01 397251 /usr/lib/libheimntlm.so.0.1.0
b7d3c000-b7d3d000 rw-p 00003000 08:01 397251 /usr/lib/libheimntlm.so.0.1.0
b7d3d000-b7d3e000 rw-p b7d3d000 00:00 0
b7d3e000-b7d65000 r-xp 00000000 08:01 397293 /usr/lib/libgssapi.so.2.0.0
b7d65000-b7d66000 rw-p 00027000 08:01 397293 /usr/lib/libgssapi.so.2.0.0
b7d66000-b7d68000 r-xp 00000000 08:01 587549 /lib/libdl-2.7.so
b7d68000-b7d6a000 rw-p 00001000 08:01 587549 /lib/libdl-2.7.so
b7d6a000-b7e98000 r-xp 00000000 08:01 394231 /usr/lib/libcrypto.so.0.9.8
b7e98000-b7eac000 rw-p 0012e000 08:01 394231 /usr/lib/libcrypto.so.0.9.8
b7eac000-b7eb0000 rw-p b7eac000 00:00 0
b7eb0000-b7eed000 r-xp 00000000 08:01 394236 /usr/lib/libssl.so.0.9.8
b7eed000-b7ef1000 rw-p 0003c000 08:01 394236 /usr/lib/libssl.so.0.9.8
b7ef1000-b7f02000 r-xp 00000000 08:01 587662 /lib/libz.so.1.2.3
b7f02000-b7f03000 rw-p 00010000 08:01 587662 /lib/libz.so.1.2.3
b7f03000-b7f22000 r-xp 00000000 08:01 399234 /usr/lib/libneon.so.27.1.2
b7f22000-b7f23000 rw-p 0001f000 08:01 399234 /usr/lib/libneon.so.27.1.2
b7f23000-b7f24000 rw-p b7f23000 00:00 0
b7f2d000-b7f39000 r-xp 00000000 08:01 393865 /usr/lib/libgcc_s.so.1
b7f39000-b7f3a000 rw-p 0000b000 08:01 393865 /usr/lib/libgcc_s.so.1
b7f3a000-b7f3c000 rw-p b7f3a000 00:00 0
b7f3c000-b7f3d000 r-xp b7f3c000 00:00 0 [vdso]
b7f3d000-b7f58000 r-xp 00000000 08:01 587564 /lib/ld-2.7.so
b7f58000-b7f5a000 rw-p 0001a000 08:01 587564 /lib/ld-2.7.so
bfa74000-bfa89000 rwxp bffeb000 00:00 0 [stack]
/lib/libc.so.6[0xb7acbc64]
/lib/libc.so.6(cfree+0x9c)[0xb7acdb4c]
/sbin/mount.davfs[0x8058c1d]
/sbin/mount.davfs[0x805db33]
/lib/libc.so.6(__libc_start_main+0xe6)[0xb7a77396]
/sbin/mount.davfs[0x804b541]
= Memory map: ==
08048000-08066000 r-xp 00000000 08:01 400772 /usr/sbin/mount.davfs
08066000-08067000 rw-p 0001d000 08:01 400772 /usr/sbin/mount.davfs
08067000-080ce000 rw-p 08067000 00:00 0 [heap]
b7900000-b7921000 rw-p b7900000 00:00 0
b7921000-b7a00000 ---p b7921000 00:00 0
b7a54000-b7a5d000 r-xp 00000000 08:01 587571 /lib/libnss_files-2.7.so
b7a5d000-b7a5f000 rw-p 00008000 08:01 587571 /lib/libnss_files-2.7.so
b7a5f000-b7a61000 rw-p b7a5f000 00:00 0
b7a61000-b7b9b000 r-xp 00000000 08:01 587546 /lib/libc-2.7.so
b7b9b000-b7b9c000 r--p 0013a000 08:01 587546 /lib/libc-2.7.so
b7b9c000-b7b9e000 rw-p 0013b000 08:01 587546 /lib/libc-2.7.so
b7b9e000-b7ba1000 rw-p b7b9e000 00:00 0
b7ba1000-b7bb5000 r-xp 00000000 08:01 587542 /lib/libpthread-2.7.so
b7bb5000-b7bb7000 rw-p 00013000 08:01 587542 /lib/libpthread-2.7.so
b7bb7000-b7bb9000 rw-p b7bb7000 00:00 0
b7bb9000-b7bd7000 r-xp 00000000 08:01 395317 /usr/lib/libexpat.so.1.5.2
b7bd7000-b7bd9000 rw-p 0001e000 08:01 395317 /usr/lib/libexpat.so.1.5.2
b7bd9000-b7be8000 r-xp 00000000 08:01 587545 /lib/libresolv-2.7.so
b7be8000-b7bea000 rw-p 0000e000 08:01 587545 /lib/libresolv-2.7.so
b7bea000-b7bec000 rw-p b7bea000 00:00 0
b7bec000-b7bf5000 r-xp 00000000 08:01 587544 /lib/libcrypt-2.7.so
b7bf5000-b7bf7000 rw-p 00008000 08:01 587544 /lib/libcrypt-2.7.so
b7bf7000-b7c1f000 rw-p b7bf7000 00:00 0
b7c1f000-b7c30000 r-xp 00000000 08:01 397282 /usr/lib/libroken.so.18.1.0
b7c30000-b7c31000 rw-p 00010000 08:01 397282 /usr/lib/libroken.so.18.1.0
b7c31000-b7ca4000 r-xp 00000000 08:01 397284 /usr/lib/libasn1.so.8.0.0
b7ca4000-b7ca7000 rw-p 00072000 08:01 397284 /usr/lib/libasn1.so.8.0.0
b7ca7000-b7ca9000 r-xp 00000000 08:01 587651 /lib/libcom_err.so.2.1
b7ca9000-b7caa000 rw-p 00001000 08:01 587651 /lib/libcom_err.so.2.1
b7caa000-b7cda000 r-xp 00000000 08:01 397271 /usr/lib/libhx509.so.1.1.0
b7cda000-b7cdc000 rw-p 0002f000 08:01 397271 /usr/lib/libhx509.so.1.1.0
b7cdc000-b7d35000 r-xp 00000000 08:01 397255 /usr/lib/libkrb5.so.22.1.0
b7d35000-b7d38000 rw-p 00059000 08:01 397255 /usr/lib/libkrb5.so.22.1.0
b7d38000-b7d3c000 r-xp 00000000 08:01 397251 /usr/lib/libheimntlm.so.0.1.0
b7d3c000-b7d3d000 rw-p 00003000 08:01 397251 /usr/lib/libheimntlm.so.0.1.0
b7d3d000-b7d3e000 rw-p b7d3d000 00:00 0
b7d3e000-b7d65000 r-xp 00000000 08:01 397293 /usr/lib/libgssapi.so.2.0.0
b7d65000-b7d66000 rw-p 00027000 08:01 397293 /usr/lib/libgssapi.so.2.0.0
b7d66000-b7d68000 r-xp 00000000 08:01 587549 /lib/libdl-2.7.so
b7d68000-b7d6a000 rw-p 00001000 08:01 587549 /lib/libdl-2.7.so
b7d6a000-b7e98000 r-xp 00000000 08:01 394231 /usr/lib/libcrypto.so.0.9.8
b7e98000-b7eac000 rw-p 0012e000 08:01 394231 /usr/lib/libcrypto.so.0.9.8
b7eac000-b7eb0000 rw-p b7eac000 00:00 0
b7eb0000-b7eed000 r-xp 00000000 08:01 394236 /usr/lib/libssl.so.0.9.8
b7eed000-b7ef1000 rw-p 0003c000 08:01 394236 /usr/lib/libssl.so.0.9.8
b7ef1000-b7f02000 r-xp 00000000 08:01 587662 /lib/libz.so.1.2.3
b7f02000-b7f03000 rw-p 00010000 08:01 587662 /lib/libz.so.1.2.3
b7f03000-b7f22000 r-xp 00000000 08:01 399234 /usr/lib/libneon.so.27.1.2
b7f22000-b7f23000 rw-p 0001f000 08:01 399234 /usr/lib/libneon.so.27.1.2
b7f23000-b7f24000 rw-p b7f23000 00:00 0
b7f2d000-b7f39000 r-xp 00000000 08:01 393865 /usr/lib/libgcc_s.so.1
b7f39000-b7f3a000 rw-p 0000b000 08:01 393865 /usr/lib/libgcc_s.so.1
b7f3a000-b7f3c000 rw-p b7f3a000 00:00 0
b7f3c000-b7f3d000 r-xp b7f3c000 00:00 0 [vdso]
b7f3d000-b7f58000 r-xp 00000000 08:01 587564 /lib/ld-2.7.so
b7f58000-b7f5a000 rw-p 0001a000 08:01 587564 /lib/ld-2.7.so
bfa74000-bfa89000 rwxp bffeb000 00:00 0 [stack]