About 3 months ago, I installed a Mercury Electra 6G SSD from OWC in my 2007 iMac. It has worked flawlessly ever since and has been incredibly fast and quiet. This morning I went to boot up and get the flashing "?". This is the first hiccup I've ever had since...well never. 5 years of constant use of the original 500GB Seagate and it never gave me any problems. So first I try to reset the pRam with no results. Next I try to boot from my Lion flash drive and go into disk utility. The SSD doesn't even show up under available disks. It's like it isn't even there. I then proceed to call OWC and talk to tech support they informed me I will have to send the drive in for them to test it and they will send me a new one since it's still under warranty. I reinstalled the original Seagate drive and I'm back up and running for now. I tested the SSD again once it was out of my machine by hooking it up externally with a SATA-USB cable and it didn't even power up or recognize it - nothing. After this experience I don't know if I trust SSD's anymore with only 3 months of use. It was only a boot drive so I only had the OS and Apps on it. All media and data I have on an external. I just thought I'd share my experience but wanted some reassurance on the lifespan of SSD's. Maybe I just got a fluke?