The popular M4 SSD’s have started malfunctioning after 5184 hours of use. They cause a BSOD in Windows or kernal panic in Linux operating systems. There are reports of crashes in Mac OS X sytems as well.
Crucial has released a new firmware to address this problem, and recommends that it be applied to all M4 SSD’s. This will prevent the problem from occurring if you haven’t reached that amount of use on your M4 SSD.
The new firmware can be downloaded from here: http://www.crucial.com/support/firmware.aspx?AID=10273954&PID=3332167&SID=u00000626