Win Vista 32. Sometime a prog hangs say, win mail. I try to end it with task manager and TM hangs. Another instance of TM is tried to end the first TM and the win mail and that TM hangs. It needs a reboot to clear. Clean no virus/spyware
yes i have mwb and did a scan last night. Also did a NAV 2011 scanLets start at step one, you say not virus
Did you make a full anti virus scan and download and make a full scan with malwarebytes?