For about 15 minutes just now I would get redirected to google.com when trying to go to yahoo.com. Ran full avast scan, nothing found, ran ccleaner, no change, ran malwarebytes scan, nothing found. Then suddenly it started working again. Still, how can this have happened if I don’t have any malware?
See this topic as it appears to be the same, http://forum.avast.com/index.php?topic=96684.0, especially the post from kubecj (avast team) http://forum.avast.com/index.php?topic=96684.msg771485#msg771485.
If it is the same - Then follow my instructions in the post below it and attach your logs here in this topic.
Maybe this is related… http://forum.avast.com/index.php?topic=96684.msg771485#msg771485