hi, every time i click in the search box the curser stays in there like it should but then dissapears after only a second or 2. i then have to click in the search box again to be able to write down what i am searching for. its currently taking me ages to write down a couple of words. i have run three virus scanning programs and this has not cured the problem. the problem has spread into my desk top set up too. click on start and that drops back off before i can get from clicking on shut down to the other shut down icon. any ideas?