I tried disc cleanup just to be sure and it didn't delete any local settings\temp files-sorry super Dave. CCleaner listed 442MB to be deleted so I ran it and it only deleted 0.31MB from local settings\temp - about 1 folder and 4 files. I checked the temp folder before and after cleaning and you could see the gaps left by the deleted files. So I clicked analyze in CCleaner again and it said 0 bytes to be removed - I may get on their forum and get their explanation. Sorry but some files say it could damage the system to delete them. File examples I'm leary about - Lang ( contain DLL's) , MozUpdater (for Thunderbird ) , WER ( Dr. Watson ) , IMT.xml (Internet Explorer script files - a bunch ) , PCIUtil.dll and several setup files ( Win 2000 , VLC media player , etc.) . Still think deleting is OK ? Why is this temp folder hidden in the first place ? thanks again