To be on the safe side, check the information on the first post of this thread under Virus/Worms for you to check your machine for malware:
http://forum.avast.com/index.php?topic=53253.0.
Follow the directions of obtaining an
MBAM log (make sure you update MBAM first) and the
OTL logs (save them as ANSI), and
aswMBR log. Post the logs as an
attachment (Additional Options > Attach > Post).
After you post them, do not make any changes to your machine, do not sync anything to your machine, and try not to use this machine or attach any portable devices to it. A malware removal specialist will look at your posts after you attach your logs, which you will do OFF line. Let us know if you have any questions. Thank you.