Hey, I'm a new mac user, and was recently just messing around with some network options so I could access files on my pc, when all of a sudden certain parts of leopard stop functioning. Hitting the apple menu and selecting system preferences for example does nothing. I click restart, again nothing. So I hold down the power button. Now when I boot it back up I get past the gray apple loading screen to nothing but a blue background and the cursor. From there nothing happens. Can any one help? **UPDATE** ok, I tried to boot up in safe mode, just looked like it started up normally to me. But now the mouse shows up and then fades out, the spinning loading symbol pops up then goes away and the mouse re-appears..repeat. Thats all it does.