I'm stumped.
I switched from AVG to Avast about five years ago, and I haven't regretted it. However, things have gotten so bad with Avast 2014 that I am thinking about dumping it for Microsoft Security Essentials or Vipre. It seems that I cannot surf the web due to Avast blocking anything related to Google. Many web sites use Google syndication, fonts, etc., and as soon as these items try to load, Avast stops my web pages from loading or only allows partial loading.
I have tried various system restore points, repairing the antivirus product, and even removing Avast with their special removal tool, and installing a fresh Avast download, but nothing has helped. The only way I could even come here and post this question is by disabling Avast.
For what it's worth, I am running Windows 7 Home Premium (64 bit) with IE 11 and Firefox 25.0.1. Neither browser can function properly unless Avast is disabled, and I have tried running Firefox in safe mode, but no joy there either. IE 11 has little or no plugins to begin with. In addition, I do not have any Avast plugins installed, either, nor the sandbox.
I talk on various computer forums, and it seems that many folks are upset with the latest version of Avast and have either dumped it or gone back to version 8.
I hate reverting to old software (version eight), and I hate to switch antivirus programs, but I am getting desperate.