Just want to let you all know, that the beach-balls and hangups on my Crucial 256GB SSD M4 are gone!! Crucial released a new firmware version 002 that resolved the issue, many user complained about. I have the SSD installed on my imac 27" 3.4GHz 2011 and now it also shows trim is enabled and the disk is flying. I'm so happy.
Here's the link to Crucial download center:
http://www.crucial.com/support/firmware.aspx
Here's the link to Crucial download center:
http://www.crucial.com/support/firmware.aspx