Answer to: new 640 GB HD freeze and beachballI have the same issue, too. My MBP installed the OS very, very slowly when using my 320GB Seagate HDD. Besides, it took 20 minutes to copy just a text file from Desktop to another place. Something must have gone wrong? Anyone have any advice? I'm going to buy a new HDD to replace the orginal HDD in MBP but will it work???