Hi all, Since I use a relatively high spec 27" iMac, I was rarely using my 2009 15" MBP. However, over the past couple of months I've relied heavily on my MBP for various reasons. Having seen the performance boost of an SSD in my iMac, I thought I'd buy an SSD to get me through until the new Haswell rMBP refresh rather than buy a soon to be 'obsolete' rMBP. To keep a long story short: Installation of SSD went well OS X install went well Updating SSD firmware to latest went well Installation of apps, and copying of data went well MBP was working perfectly at this point for ~3 weeks 3 days ago, MBP goes to sleep (15 minute timer) Tried to wake up - whole system froze Turned off via power button (no other choice) Restarted everything was ok Put MBP back to sleep via -> Sleep Woke up, same crash happened again - another power button job Upon restarting, no bootable partitions were found The drive could not be seen or formatted by OS X, Ubuntu, or Windows! The drive was, in essence, completely destroyed Fortunately I got the drive replaced, so am sitting here with a new, unformatted Samsung 840 SSD - but I'm scared to go any further. If the MBP is likely going to destroy it again, I'd rather get my money back. Does anyone know of any incompatibility issues with a 2009 MBP and the Samsung 840 series? Any similar reports, or ways to avoid this? I had enabled TRIM support, which I know isn't native for third-party SSDs, so perhaps that had something to do with it? I've tried Googling, but couldn't find anything really substantial. It was directly related to the wake up of the MBP / OS X. It worked absolutely perfectly at all other times. Although I don't lose any data - most stored on Dropbox or iMac - it's a real pain having to spend ~2 hours installing OS X / apps and copying data (I know, first-world problems...). I prefer not to use backup restores, especially with new hardware. Any ideas/hints/suggestions welcome!