MY computer is very slow to go from windows sign in to home screen, my anti virus (Macfee) is saying it is unable to open and run due to ?shield being unable to run due to low memory and to close all running programs, but there are no running programs and the memory is not low and the hard drive has a large amount of free space only about 1/5 used. I am able to use the internet but unable to used windows media player etc due to low memory, unable to use MSN messenger, unable to install anything due to problems with windows installer? In my programs Macfee componets have no size next to them nor does the windows installer, unable to uninstall or reinstall macfee. This all started after updating the latest microsoft updates. I have run the windows malicious tool but the computer was fine. I am unable to open any help tools or files on the computer and windows system restore is not working either, it wont let me download anything from the macfee site or the windows update site it is like something is blocking it. Any help would be appreciated?