I've seen a few posts on here where people have had bad blocks containing data tagged by Scannerz (http://scsc-online.com/Scannerz.html). What do I mean by this? Theoretically a bad block on an SSD is supposed to be caught before it writes data to it and then the bad block get re-mapped. What I'm reading is that a block that's already been written to just decides to go bad even though its holding data, which I thought wasn't supposed to happen. Are there any real statistics on SSD reliability and testing anywhere that are current?