Running horde/imp I get the error message:

[root@mint RFS]# httpd -X
*** glibc detected *** corrupted double-linked list: 0x08f55888 ***
Aborted
[root@mint RFS]#

This is running centos (redhat enterprise 4)

This is repeatable.

Digging further, here are the last few lines of stracing the httpd -X that is serving up an imp web page. It actually worked for a bit -- I started the web server w/out apc, logged in to imp, restarted the web server with apc, no problems.

I then removed the php session files which forced a re-login to imp .... and it just died.

stat64("./Log.php", 0xbff850bc)         = -1 ENOENT (No such file or directory)
stat64("/usr/share/pear/Log.php", {st_mode=S_IFREG|0644, st_size=18563, ...}) = 0
getcwd("/var/www/InternalFacing/html/horde-2.2.5/imp-3.2.5", 4096) = 51
lstat64("/usr", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/usr/share", {st_mode=S_IFDIR|0755, st_size=12288, ...}) = 0
lstat64("/usr/share/pear", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/usr/share/pear/Log.php", {st_mode=S_IFREG|0644, st_size=18563, ...}) = 0
open("/usr/share/pear/Log.php", O_RDONLY) = 23
fstat64(23, {st_mode=S_IFREG|0644, st_size=18563, ...}) = 0
fstat64(23, {st_mode=S_IFREG|0644, st_size=18563, ...}) = 0
lseek(23, 0, SEEK_CUR)                  = 0
lseek(23, 0, SEEK_SET)                  = 0
stat64("Log.php", 0xbff860ec)           = -1 ENOENT (No such file or directory)
stat64("./Log.php", 0xbff85cac)         = -1 ENOENT (No such file or directory)
stat64("/usr/share/pear/Log.php", {st_mode=S_IFREG|0644, st_size=18563, ...}) = 0
fcntl64(19, F_SETLKW, {type=F_WRLCK, whence=SEEK_SET, start=0, len=1}) = 0
fcntl64(19, F_SETLK, {type=F_UNLCK, whence=SEEK_SET, start=0, len=1}) = 0
close(23)                               = 0
fcntl64(19, F_SETLKW, {type=F_WRLCK, whence=SEEK_SET, start=0, len=1}) = 0
fcntl64(19, F_SETLK, {type=F_UNLCK, whence=SEEK_SET, start=0, len=1}) = 0
stat64("./Log/syslog.php", 0xbff8428c)  = -1 ENOENT (No such file or directory)
stat64("/usr/share/pear/Log/syslog.php", {st_mode=S_IFREG|0644, st_size=4875, ...}) = 0
getcwd("/var/www/InternalFacing/html/horde-2.2.5/imp-3.2.5", 4096) = 51
lstat64("/usr", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/usr/share", {st_mode=S_IFDIR|0755, st_size=12288, ...}) = 0
lstat64("/usr/share/pear", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/usr/share/pear/Log", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/usr/share/pear/Log/syslog.php", {st_mode=S_IFREG|0644, st_size=4875, ...}) = 0
open("/usr/share/pear/Log/syslog.php", O_RDONLY) = 23
fstat64(23, {st_mode=S_IFREG|0644, st_size=4875, ...}) = 0
fstat64(23, {st_mode=S_IFREG|0644, st_size=4875, ...}) = 0
lseek(23, 0, SEEK_CUR)                  = 0
lseek(23, 0, SEEK_SET)                  = 0
stat64("Log/syslog.php", 0xbff852bc)    = -1 ENOENT (No such file or directory)
stat64("./Log/syslog.php", 0xbff84e7c)  = -1 ENOENT (No such file or directory)
stat64("/usr/share/pear/Log/syslog.php", {st_mode=S_IFREG|0644, st_size=4875, ...}) = 0
fcntl64(19, F_SETLKW, {type=F_WRLCK, whence=SEEK_SET, start=0, len=1}) = 0
fcntl64(19, F_SETLK, {type=F_UNLCK, whence=SEEK_SET, start=0, len=1}) = 0
close(23)                               = 0
fcntl64(19, F_SETLKW, {type=F_WRLCK, whence=SEEK_SET, start=0, len=1}) = 0
fcntl64(19, F_SETLK, {type=F_UNLCK, whence=SEEK_SET, start=0, len=1}) = 0
gettimeofday({1115823216, 883866}, NULL) = 0
--- SIGSEGV (Segmentation fault) @ 0 (0) ---
+++ killed by SIGSEGV +++

Try the current CVS version instead.

Please try the latest package version and report back if you're still experiencing this issue.

No feedback was provided. The bug is being suspended because
we assume that you are no longer experiencing the problem.
If this is not the case and you are able to provide the
information that was requested earlier, please do so and
change the status of the bug back to "Open". Thank you.