I seem to have been infected by something that makes Chrome unable to access avira.com or avast.com or mcafee.com or avg.com - or microsoft.com, probably among others. I run Windows 7 Ultimate. I had the same problem in firefox and ie 32 bit. But ie 64 bit never had this problem. I upgraded Firefox and now that browser works properly. But uninstalling Chrome and reinstalling did not make chrome work. Any help appreciated. I have run my antivirus (avira) and SpyBot 2.1 and they cleaned whatever they could. No good.