Can anyone help me this is driving me bat! I'm using Firefox 16 64 bit and whenever I play any video my mouse cursor gets very laggy and choppy, especially when moving the cursor over the video itself. I'm completely updated with my Adobe Flash and FF but it still happens. I never had this problem in FF 15. Is there some way to downgrade without losing my settings and stuff?

I updated my Firefox to version 16 and where I used to be able to middle-click on links to open them in a new tab, now NOTHING happens when I do it. No new tab opens or anything. I've looked through all of my settings and can't find anything that has changed from my previous settings regarding opening middle-clicked links in a new tab / window. HALP!

Here's my problem, I have a shortcut to the regular 32 bit version of Firefox which I use as my main browser because there isn't a real 64 bit version of it to use (common already Mozilla! Get with the #$(*# times!! ), BUT I also have a shortcut to the FF Nightly version which is 64 Bit. Stick with me here!