Every two or three hours, firefox locks my computer by creating thousands of tracks and temporary file megabytes. I have to power button the computer off and restart. I have tried ridding of cache etc, but nothing works. I am running win 7 64x ultimate, and the latest firefox browser, but this issue has been going on with previous versions and over years. Yesterday the problem corrupted some files that sfc /scannow can't even fix. Please help. sam