I have a 27" iMac, the newest model, and before Lion in booted in a snap. It went to sleep instantly when pressing the power button. And it just generally ran very fast. But thanks to Lion, it sits at the grey boot screen for several minutes, sometimes up to 10 minutes, it takes another 5 or 10 minutes to release control after OS X has started (the desktop and dock are shown but you can't really do anything, it's as if it's locked up temporarily), and whenever I press the power button for sleep mode, it takes about a minute or two to actually go to sleep. In addition, I feel like performance in general is just slower, and I seem to have a lot more incidents of programs crashing or hanging. WTF Apple?! Am I the only one experiencing these issues?