On our test box we're intermittently getting a blank page with "Service Unavailable" when trying to access one particular site that is built in Umbraco. Other sites are fine.
We seem to get a few errors in the event log like the one below before the AppPool stops working.
Faulting application w3wp.exe, version 6.0.3790.3959, stamp 45d6968e, faulting module kernel32.dll, version 5.2.3790.4480, stamp 49c51f0a, debug? 0, fault address 0x0000bef7.
Stopping and starting the AppPool fixes the error.
Any ideas on getting better error messages or what causes the "Service Unavailable" error?