Hi, i am a victim of the lsass error, too. A customer of mine experiences the crash problem on all his 4 windows 2003 servers, which occours every 3 -4 days. I cannot/do not want to completly disable imon on the servers, because a mail server is running on the servers and if i disable imon, viruses or at least virus warnings get through to the users. I have tried everything that came to my mind and what was proposed here to work around the problem, but it seems to haunt me. So if there is new information i would be very glad to know about it.