Im having problems executing a successful screen grab on my iMac. Ive always used Shift+Cloverleaf+4 to select a portion of the screen and then get a snapshot, and that still seems to work because im hearing the photosnap sound. The problem occurs when i go to paste this captured selection, nothing happens. I cant paste it in photoshop, email, or anywhere for that matter. Has anyone else experienced this problem on the new iMacs?