Hi, while I haven't conducted as many tests as Denis has, I can say that my T500 hibernated nicely up until 2.6.32 last version before -36 (I can't currently confirm for 2.6.32-36), and breaks for every later kernel. I can also say that, for the even more recent kernels, the machine does not even suspend-to-ram. I'm running the -686 variant of things, not the amd64 stuff. Feel free to ask any questions. Kind regards, --Toni++