Hi, have posted this once before, and got no responses (billy-no-mates - me!!) and wondered if any of you kind souls had any ideas regarding this one! Quite frequently when I change between user, I get the above message...and the only way round this is to restart the computer. I am now also getting it with loading websites too! I am really really stuck here..and dont know how to make this problem go away....I am a basic user. Is there anything I can do to rectify this...even if it is a good program that can be bought to sort it out..I have searched the microsoft site and there was SO much information...I didn't know what to do....too frighted in case I reprogram or crash something.....PLEASE HELP!