Ok, I think I might know what caused most of the errors, well most of the errors on the 2003 box. Just before the time we started getting this errors we had an email problem. This problem was more of a global problem that made it impossible to send emails via TCP. To rectify the problem I had to edit the metabase data. I did this with IIS Metabase Explorer.

I had to add under LM/SMTPSvc/1 a dword, value 36997 (SmtpUseTcpDns) with a value of either 2 or three. These settings made it possible to send mail. I could not get this key added to the 2000Box and had to route the mail through the 2003 box.

I now changed the setting back to 1 (Tcp). Its now been 3 days and not once I had to restart IIS.

Crap - it seems rather painful to think that some obscure setting like that would cause such strange behavior to your main IIS server...

Glad you figured it out though...

+++ Rick ---