I have been using avast home for several months without any problems, but recently tried to upgrade to 4.8 professional; I had to uninstall it because several web based apps (at least some of which appear to be java based) would not work -- clicking on the the link did not work (e.g. could not open emails in MS email web access, although could log on.) Google mail, though, appeared to work fine. The problem appears to be specific to using IE (we have v6); I do not see the problem with firefox. Any ideas would be most appreciated.