hey guys, i need a little help with this. I have a Macbook Pro. 2.33 GHZ intel core 2 duo, 2 GB ram. I got it recently with tiger loaded on it and there were no problems with shut down or booting up. I upgraded it to Leopard and now the boot up takes over 6 minutes, it usually is on the apple logo for about a minute, then on the blue screen for the rest of the time. and on shut downs, the screen turns off, but i can still hear its on, so i have to hold down the power button to turn it off. I dont know whats going on, but ive had many macs and never had this problem. any ideas? ive tried doing a fresh install of leopard, archive and install, doing the power cycle where you take out the battery and hold down the power button for 5 seconds, and booting in safe mode. what else can i do? Thanks! i have also reset the PRAM. and today i installed the windows 7 RC on a seperate partition and it boots up in seconds and shuts down in seconds as well. but leopard still hangs!