I brought the 128GB m4 and have had a similar experience. On a side note, there is a firmware upgrade that just came out that improves performance. http://www.

I brought the 128GB m4 and have had a similar experience. On a side note, there is a firmware upgrade that just came out that improves performance. http://www.crucial.com/support/firmware.aspx http://www.crucial.com/support/firmware.aspx