I just purphased a new LaCie HD for my Mac OS X. Installation went smoothly. I began to back-up my important files, but half way through, the Mac froze. I could only restart the computer by manual shut down. Everytime I start the Mac now, after I have logged in and the desktop shows, my computer freezes everytime I click on anything. This means any icon including finder, or safari. I can still move the curser around, however, it just diplays that taunting colorwheel. Any suggestions about why this is happening before I pay money on tech service? P.S. I disconnected the HD from the MAC for another start up but the same symptoms occured.