In the process of test upgrade runs for my company’s implementation of MOSS 2007, our MOSS server threw up a bunch of errors regarding memory being corrupt, etc. Well the From the Field blog posted a solution that seems to be working in my case. Basically it involves installing the Microsoft Hotfix 923028 for .NET 2.0, but then also re-entering the username and password for the SharePoint Timer Service. You can read their post here.