Hello, I get this screen a couple times a day when I am in Windows 7 Explorer. I have other programs up when it stops working. In a normal day, I have several websites up in Firefox. I have my Thunderbird mailbox up but cradled. I have one photo-editing program up. As well, I have Sticky Notes cradled in the tray. Why would this stop working with normal daily activity? Thanks for all your help.