Hello, I am using vista 64bit home premium. I have this annoying problem. my taskbar and start menu suddenly become not responding. i do this cntrl+alt+del but task manager also doesnt respond.all the fields in task manager is displayed blue..only way is to restart..i do conrl+alt+del and select the restart button on the right corner..after re-starting some times it becomes ok but, some times the same problem persists..please some one help how to tackle this problem. Thanks in advance