Yesterday i installed kerio personal firewall.Kerio wanted to boot the pc.i booted but the computer just didn’t start.The only way to start the pc was to enter in safe mode and uninstall kerio.after that everything was just fine
Info:win 98 se
avast 4.5.523
And what has that got to do with Avast 4? Because that is what this forum is for.
Please post in the off-topic forum or another apropiate forum next time.
O.K.I just know that here are people that can help me with kerio.I’m not shure if kerio is working fine with avast-i’m not telling that avast is the problem!!! 
Kerio and Avast should work together without problems. Have you tried to install Kerio again to see if it happens again?
If so, I would say try another free firewall like ZoneAlarm or Sygate.