Do you update the firmware to 000F version?
Because after about 5000hr use, some M4 will freeze or BSOD, go to crucial site to download and updte the firmware.http://www.crucial.com/support/firmware.aspx?source=
Thanks for that. After I posted this, I went to their website and looked at the firmware. I was hoping that might be the case. Need to increase space anyway, so I am going to wait for my new drive (a Samsung), and when that is up and running, update the 64gb and use for additional storage.