Hey guys,
There are reports coming in of fried cards from the memory overheating on them. Be careful mining litecoin if you have no heatsinks on your memory (most reference designs that are rear exhaust do), check and make sure with a thermal diode that your memory isn't at a really high temperature.
My 6970 crapped itself last night while mining LTC with Reaper. It might be co-incidence,but as Tacotime says,be careful!