When opening Internet (IE6) explorer a message window pops up telling me IE has encountered a problem and needs to shutdown. I have managed to instal IE7 (after connecting to the internet using Firefox) but the same problerm occurs. I have run a virus scan but cannot find any obvious cause of the problem. Does anyone know (1) what is the cause and (2) the solution? I could stick with Firefox, but my AV (McAfee) tells me it needs IE6 or 7 to perform updates.