Sunday 20th November 2011: 10.29pm. God damn sand force ssd suddenly started hanging about five minutes after booting up the computer. Too short to copy much off so I've lost my install. Anyway, did a factory reset and suddenly it appears to no longer hang even with a dd if=/dev/urandom of=/dev/sdc bs=1M. Have run this twice using md5sum to verify and it's working. Should I trust it again???