IIS 7.5 (Win 2008 R2) + Vbulletin = w3wp.exe crash
 

Hi All,

Ever since we upgraded our servers to Windows 2008 R2 we've been getting the following error messages in our event logs relating to ONLY our vBulletin websites:

Quote:
Faulting application name: w3wp.exe, version: 7.5.7600.16385, time stamp: 0x4a5bd0eb
Faulting module name: ntdll.dll, version: 6.1.7600.16385, time stamp: 0x4a5be02b
Exception code: 0xc0000005
Fault offset: 0x0000000000051da0
Faulting process id: 0xdf4
Faulting application start time: 0x01ca2e4e16aab154
Faulting application path: c:\windows\system32\inetsrv\w3wp.exe
Faulting module path: C:\Windows\SYSTEM32\ntdll.dll
Report Id: 11c920a0-9ab7-11de-9287-000c296aa92b
Plus (at the same time):
Quote:
A process serving application pool 'forum.xxxxxx.co.uk' terminated unexpectedly. The process id was '2328'. The process exit code was '0xc0000005'.
This is with MySQL 5.1 + PHP 5.2.10 or 5.3.0 installed on the server as FastCGI.

I've tried changing many PHP/IIS/MySQL settings but as they are the same settings used on our old Win 2008 server, I dont see why we are suddenly getting problems.

Once again, I'd like to stress that this is ONLY happening on vBulletin websites out of all the other PHP websites (including very heavily used OpenX ones).

Strange thing is that w3wp.exe is whats crashing rather than php-cgi.exe which occasionally happens when there's bad php coding. So I did a little hunting on the net and came back with this. Could this possibly apply to any vB ajax code?