I have a Lenovo T400 with an Intel Cenrino 2 vPro prcessor and I am running Ubuntu 12.04 64bit. For the most part, everything is running great, but I have one problem. For some reason I can not play DVDs at all. I am able to play all other video formats with no problem, but when it comes to DVDs, I keep getting an input/output error. I have tried about a dozen DVDs and still come up with the same problem. I can play CDs with absolutely no problem. I also have all the needed drivers and such needed to play DVDs. Am I the only one with this problem? And is this fixable? And How?