Is this a threat or no?

Everytime I type in a letter or character in my address bar when surfing the web it always comes up as a threat detection. Any feedback will be great, whether I should be worried or not.

What is the message … a screenshot would help

Follow this guide and attach the requested logs http://forum.avast.com/index.php?topic=53253.0
We need Malwarebytes / OTL / aswMBR logs