Dual Monitors Rated 4 out of 5 stars
I run Dual Monitors with extended desktop. Monitor #1 (on the left) runs at 1600x1200. Monitor #2 (on the right) runs at 1024x768.
If I bring firefox to monitor #2, maximize it, then fuller screen it, the auto-unhide freaks out.
I have to disable (both)
 Show when pointer hits the edge of the screen
Also, the Status Bar Persistency timer does not function. I had it set to 12,000 ms, and no go.
Otherwise, it functions properly.