Sorry to hear that. What OS are you using? Win XP, Win 7, Linux or Mac OSX? You never want to DEFRAG these hard drives do make sure you have this service disabled. Follow the steps in the guide here:http://www.overclock.net/t/1133897/windows-7-ssd...
Try disabling write caching. This is a trick on older SSD's to fix freezing or stuttering ( e.g., I personally use CORSAIR SSD's). There's nothing to lose so give it a shot and then reboot.