My FireFox has just started a minor but irritating behavior. Every time I open a new window with Ctrl-N, it takes all of the FF windows open on my desktop and re-arranges them in a stack with the oldest windows at the bottom. The problem with this is that it changes the Alt-Tab order of the windows. If I have a window that I'm doing multiple "Open this link in new window"'s from, the page I'm opening from doesn't stay as the second from the top - it's moved further and further back in the stack as new windows are open. Reinstalling didn't help. The start of this issue doesn't coincide with any change in the software, and Google doesn't seem to help (or I can't find the right combination of words to search on).