I'm hoping you experts can shed some light on this very dark situation. Yesterday, we had some sort of virus breakout on our network. It appears to be the w32.spamuzle aka marioforever.exe trojan. Unfortunately I still haven't pin-pointed where it came from. I'm having a hard time removing it. It appears to be on most of my server's shared network drives. I have done extensive scanning on my 3 servers. I have been using Clamwin and McAfee's House Call online scanner and it hasn't found anything on the individual servers. I haven't gotten a chance to scan every individual machine because it's during business hours. I will be doing individual machines this evening when everyone goes home.
I really only seem to be having 1 problem at this time. It seems completely random, no rhyme or reason but a User will be unable to access network resources; shared drive, my documents, etc. They get the following error message. "The network BIOS session limit was exceeded."
If I reboot the client machine that's having problems it will temporarily resolve said problem.
I'm at my end and I'm looking for suggestions. I greatly appreciate your time.