Nope, I take it back about mudcat. The latest suspect is Outlook Express and my ISP. I have OE check several mail accounts every few minutes, and all of a sudden it wants me to re-enter the passwords or at least hit OK for the remembered password. This may be what causes a window to flash on the toolbar. Or maybe it's one of those government projects using my computer for something? Would love to catch the thing and see if I can get it to click open!