I launch Firefox and start typing a URL or search string and the Firefox window instantly resizes to full screen. This happens only once after launching Firefox. I can 'restore down' and continue without the problem occurring again, unless I close Firefox and relaunch, and then window will resize to full screen when I start typing. Problem started about one month ago. Win 7 16-bit, FF 3.6.8. Thanks in advance! == This happened == Every time Firefox opened == last Firefox update?