İ would also try to do a scan with this http://www.eset.com/us/online-scanner/
.Please make sure to disable your antivirus,just before you start the scan,and re-enable it again after the scan is finished.İf anything is found at the end of the scan have it delete them.Before that i would uninstall both MBytes and S.A.Spyware preferably with REVO and doing clean up afterwards with CCLEANER.
İf defragmenting your hdd is needed please do that as well,then reboot.
Let us know the results from the ESET scan and we'll take it from there.
Edited by Julia G, 04 November 2012 - 05:35 AM.