The Task Bar and the Desk Top Refresh themselves every 30-60 seconds. When this happens I lose things like any photos I may be working on or documents or my computer files. They don't dissapear from the files, but I have to re-open the file each time. It takes about 40 seconds to refresh. Also loser my cursor if I'm writing anything including this posting and emails. I then have to reposition where I was writing and click a new cursor in before I can continue writing.