I cant remember the warning I got, It had somthing to do with C++ Runtime error
Anyways I am using IE8 256 bit. I think it had somthing to do with the Web Of Trust Addon I have installed on IE8, because I dont have the Web Of Trust addon installed on Mozilla Firefox and Firefox works fine with Avast’s Web Rep installed.

I’m using Avast 6.0 (free version)
Downloaded from here>> http://download.cnet.com/Avast-Free-Antivirus/3000-2239_4-10019223.html?part=dl-85737&subj=dl&tag=button