Event Type: Error Event Source: Application Error Event Category: (100) Event ID: 1000 Date: 12/11/2007 Time: 5:50:17 AM User: N/A Computer: APPSERVER Description: Faulting application w3wp.exe, version 6.0.3790.3959, faulting module w3core.dll, version 6.0.3790.3959, fault address 0x000201b4 and Event Type: Error Event Source: Active Server Pages Event Category: None Event ID: 5 Date: 8/11/2007 Time: 7:53:46 PM User: N/A Computer: APPSERVER Description: Error: The Template Persistent Cache initialization failed for Application Pool 'DefaultAppPool' because of the following error: Could not create a Disk Cache Sub-directory for the Application Pool. Hi All, I'm getting the above errors continuousally (more then once a day) on a 2003 Standard SP2. It appears to lockup the mail system on that server too causing emails not to be delivered. I believe it's related as when I restart the server operations work as normal until it falls over again. Google and I are not coming up with much results that are specific to the errors above. Anyone can assist ? Robbie