LSA Shell error after doing Avast scan

[inspades]

I am getting the following error when starting Windows XP.  It began after I did an Avast scan for viruses.  Most people that receive this error also have Windows shut down. I do not get this.  Below are details for the error.

LSA Shell (Export Version)encountered aproblem and needs to close.

Error Signature
szAppName : lsass.exe     szAppVer : 5.1.2600.2180     szModName : lsasrv.dll
szModVer : 5.1.2600.3249     offset : 000755d5     

The following files will be included in this report to Mircrosoft

C:\DOCUME~1\Kevin\LOCALS~1\Temp\WER1ab9.dir00\lsass.exe.mdmp
C:\DOCUME~1\Kevin\LOCALS~1\Temp\WER1ab9.dir00\appcompat.txt

[Lisandro]

Maybe you could follow Vlk's instructions here http://forum.avast.com/index.php?topic=33616.msg281371#msg281371 to make a dump of lsass.exe.