User-Agent: Mozilla/5.0 (Macintosh; U; PPC Mac OS X Mach-O; en-US; rv:1.8b3) Gecko/20050712 Firefox/1.0+ Build Identifier: Mozilla/5.0 (Macintosh; U; PPC Mac OS X Mach-O; en-US; rv:1.8b3) Gecko/20050712 Firefox/1.0+ When the user wishes to drag a window to a new location on the screen, most of the time the window immediately returns to its original position. This bug is very difficult to diagnose. It cannot be reproduced reliably. There seems to be some automatic detection mechanism that tries to keep people from "accidentally" moving their windows around. Some people hate to move any windows, anyway. I move my windows all the time.