Firefox 4 stops opening new windows after browser window dragged to second display. It's weird. Behavior is fine until I drag any browser window to the attached second display, and after this point it stops opening new windows but will still open new tabs in the same window. Restart fixes it until I drag the window back to the second display. "Show all bookmarks" stops working too--won't open a new window. This is after clean reinstall with total deletion of any Firefox/Mozilla folders and the previously installed app and a restart of the computer. Mac OS X 10.6.7 Firefox 4