Perhaps try updating the firmware of the SSD. You have to burn the firmware image to a CD or DVD and then boot from the CD. Use imgburn or CDBurnerXP. They released these drives with release candidate firmware and this is a known issue.http://www.crucial.com/support/firmware.aspx
You may need to RMA it. If you buy another, consider a reliable drive and avoid Sandforce 6gbps controllers for now. Try Intel 320/510 or Samsung 470 instead.