OFFERS4U Popups

A few days ago I started getting a popup at the bottom of my screen offering “deals” from OFFERS4U, my Adblocker Plus does not block it. Is there anything in AVAST that could get rid of this? Is it a virus?

try this. http://forum.avast.com/index.php?topic=53253.0

run AdwCleaner…click delete…attach log

then attach a OTL diagnostic log and a malware expert will take a look later today…