Being a firefox fan, I just updated my current FF (3.6.x) to FF 4, everything goes well and I could see much improved FF both performance and UI wise, but I couldn't use selenium IDE with it (Yes, some time I do UI testing), so after some googling found 2 solutions: Solution #1: If you already have the selenium installed but its disabled because it's not supported by FF 4 yet, the fix (hack) is explained here (See Mark Collin reply) Solution #2: If you don't have selenium IDE installed, then simply download the latest supported but not yet released selenium IDE installer from here and install it just by dragging or opening it to FF window.
Some#random('thoughts'); // technical, non technical