id,summary,reporter,owner,description,type,status,priority,milestone,component,version,resolution,keywords,cc,blockedby,phpversion,appname,pending,exts,sapi,probability,blocking
78,VBulletin 500 Error,mastermind,moo,"VBulletin 3.6.5 using PHP 4.4.5 via php_suexec on Apache 1.3.37 with XCache 1.2 gives a 500 error on the showthread page.  The full error in the Apache error_log given is:
Premature end of script headers: /*removed*/showthread.php
The configuration in php.ini is as follows:
{{{
[xcache-common]
;; install as zend extension (recommended), normally ""$extension_dir/xcache.so""
 zend_extension = /usr/local/lib/php/extensions/no-debug-non-zts-20020429/xcache.so
; zend_extension_ts = /usr/local/lib/php/extensions/non-debug-zts-xxx/xcache.so
;; For windows users, replace xcache.so with php_xcache.dll
;; zend_extension_ts = c:/php/extensions/php_xcache.dll
;; or install as extension, make sure your extension_dir setting is correct
; extension = xcache.so
;; or win32:
; extension = php_xcache.dll

[xcache.admin]
xcache.admin.user = ""mOo""
; xcache.admin.pass = md5($your_password)
xcache.admin.pass = """"

[xcache]
; ini only settings, all the values here is default unless explained

; select low level shm/allocator scheme implemenation
xcache.shm_scheme =        ""mmap""
; to disable: xcache.size=0
; to enable : xcache.size=64M etc (any size 0) and your system mmap allows
xcache.size  =                32M
; set to cpu count (cat /proc/cpuinfo |grep -c processor)
xcache.count =                 1
; just a hash hints, you can always store count(items) slots
xcache.slots =                8K
; ttl of the cache item, 0=forever
xcache.ttl   =                 0
; interval of gc scanning expired items, 0=no scan, other values is in seconds
xcache.gc_interval =           360

; same as aboves but for variable cache
xcache.var_size  =            32M
xcache.var_count =             1
xcache.var_slots =            8K
; default ttl
xcache.var_ttl   =             0
xcache.var_maxttl   =          0
xcache.var_gc_interval =     300

xcache.test =                Off
; N/A for /dev/zero
xcache.readonly_protection = Off
; for *nix, xcache.mmap_path is a file path, not directory.
; Use something like ""/tmp/xcache"" if you want to turn on ReadonlyProtection
; 2 group of php won't share the same /tmp/xcache
; for win32, xcache.mmap_path=anonymous map name, not file path
xcache.mmap_path =    ""/dev/zero""


; leave it blank(disabled) or ""/tmp/phpcore/""
; make sure it's writable by php (without checking open_basedir)
xcache.coredump_directory =   ""/tmp/phpcore/""

; per request settings
xcache.cacher =               On
xcache.stat   =               Off
xcache.optimizer =            On

[xcache.coverager]
; per request settings
; enable coverage data collecting for xcache.coveragedump_directory and xcache_coverager_start/stop/get/clean() functions (will hurt executing performance)
xcache.coverager =          Off

; ini only settings
; make sure it's readable (care open_basedir) by coverage viewer script
; requires xcache.coverager=On
xcache.coveragedump_directory = """"
}}}
For now we've switched to EAccelerator, but would really like to get back to XCache, after the great experience using lighttpd for static file serving.",defect,closed,minor,1.2.1,cacher,1.2-dev,fixed,,,,4.4.5,VBulletin 3.6.5,0,,Others,,