Just downloaded & installed Avast 4 home use. It appears to be working. Proplem: You click on the desktop icon & open Avast 4 simple user interface screen & it opens up. When you click the x to close it you get an error message - Ashsimpl An error has occured in your program - etc. When you close that window another appears saying Ashsimpl caused a general protection fault in module GDI.exe. It will then close out okay or the screen goes black & you have to restart the computer. I am running Win 98 SE,Explorer 6.0. Hope someone can help Thanks