Hello.
Having what I assume to be a permissions problem with sharepoint and IIS. I used one of the knowledge base article http://support.microsoft.com/default.aspx?scid=kb;EN-US;823552 and a very similar one under technet - followed it to the letter and still having the same issue.
What DOES seem to work is switching the appl pool to use the local system account but due to security reasons I'd rather not use that service. I was using the network service up until a few days ago but for whatever reason, stopped working. I've checked the IIS_WPG group and the STS_WPG group -- they both have network service and the two necessary IIS accounts within.
Any ideas?