error with aspnet_isapi.dll

[.:mmac:.]

Win2k server that recent;y had a virus (fixed by client so I don't know
which one it was) is filling the event log with this error:

7/6/2005,4:39:07 PM,Perflib,Error,None,1008,N/A,SERVER,"The Open Procedure
for service ""ASP.NET_1.1.4322"" in DLL
""C:\WINNT\Microsoft.NET\Framework\v1.1.4322\aspne t_isapi.dll"" failed.
Performance data for this service will not be available. Status code
returned is data DWORD 0. "

They didn't have SP4 installed so I had them install that but they tell me
that the logging continues. Perfmon isn't running so what else could cause
this error? I am going to TS into their machine tonight after closing so I
am looking for ideas. I searched the KB and didn't find anything this
specific. Perhaps reinstalling the framework will fix it?
thanks for any help.