I've solved the cold boot attack, discussed here back when the original paper on it was published. There have been some other attempts at solving this, but as far as I can tell, mine is the only one currently available with actual working code, OSS or otherwise. It comes with a small performance price (read the paper), but I've been using this on my machines for months and I really haven't noticed a significant slowdown in system performance. Get the code and paper here. Instructions for using the code here."
Link to Original Source