Hi!

I have an webapplication written in ASP that talks to a dotnet app hosted in
a winservice application via .net remoting. The server is based upon a
singleton object that serves multiple ASP websites.

About three times a week the w3wp.exe process crashes and debugging the
minidump gives the following stacktrace:

 mscorwks.dll!IUnkEntry::Free()  + 0x59
 mscorwks.dll!ComPlusWrapper::ReleaseAllInterfaces()  + 0xa
 mscorwks.dll!ComPlusWrapper::ReleaseAllInterfacesCallBack()  + 0xda
 mscorwks.dll!CtxEntry::EnterContextCallback()  + 0x2d
 ole32.dll!EnterForCallback()  + 0xae
 ole32.dll!SwitchForCallback()  + 0x2b1
 ole32.dll!CRemoteUnknown::DoCallback()  + 0x5bb2c
 rpcrt4.dll!_Invoke@12()  + 0x30
 rpcrt4.dll!_NdrStubCall2@16()  + 0x217
 rpcrt4.dll!_CStdStubBuffer_Invoke@12()  + 0x82
 ole32.dll!SyncStubInvoke()  + 0x33
 ole32.dll!StubInvoke()  + 0x7b
 ole32.dll!CCtxComChnl::ContextInvoke()  + 0xd2
 ole32.dll!MTAInvoke()  + 0x1a
 ole32.dll!STAInvoke()  + 0x4c
 ole32.dll!AppInvoke()  + 0x8d
 ole32.dll!ComInvokeWithLockAndIPID()  + 0x21b
 ole32.dll!ComInvoke()  + 0x71
 ole32.dll!ThreadDispatch()  + 0x1a
 ole32.dll!ThreadWndProc()  + 0x93
 user32.dll!_InternalCallWinProc@20()  + 0x28
 user32.dll!_UserCallWinProcCheckWow@32()  + 0xa2
 user32.dll!_DispatchMessageWorker@8()  + 0xdc
 user32.dll!_DispatchMessageW@4()  + 0xf
 comsvcs.dll!CSTAQueueLessMessageWork::DoWork()  + 0x53
 comsvcs.dll!CSTAThread::DoWork()  + 0x18
 comsvcs.dll!CSTAThread::ProcessQueueWork()  + 0x37
 comsvcs.dll!CSTAThread::WorkerLoop()  + 0x2fb
 msvcrt.dll!__endthreadex()  + 0xa3
 kernel32.dll!_BaseThreadStart@8()  + 0x34

I've been searching the net for sometime trying to locate an explanation.
Could anyone point me in the right direction?

Thanks!

/Johan