Do I have a virus? Avast blocking sites.?

[DunbarPappy®ϟϟ]

FYI:
After you get this resolved, modify Chrome to deflect these JavaScript problems:

CHROME> wrench icon> Preferences> Under the hood> Content settings>
Cookies heading: tick "Allow local data..." & "Ignore exceptions and block 3rd party...";
Plug-in's heading> tick "Click to play";
Location heading> tick "Do not allow...";
Notifications> tick "Ask me when...";
Mouse cursor> tick "Do not allow site to disable...";
Close tab.

"AdBlock Plus" (might need 'subscription' added after install).
https://chrome.google.com/webstore/search?q=ad+block
"KB SSL Enforcer" add-on: https://chrome.google.com/webstore/detai...ofphddckof
►►"ScriptSafe" stops all kinds of nasties and should be used by everyone. https://chrome.google.com/webstore/detai...lahbdbdgdf