I am currently using dual boot with Ubuntu 12.04 and Windows 8 on my Lenovo Thinkpad E135 for about a month now. I don't really have much problem with I am using Windows 8, but with Ubuntu 12.04, it freeze up a lot. I noticed majority of the time is when I am watching youtube and surfing web. But sometimes when I am not doing anything too. I have tried switching to Ubuntu 2D, but the problem remains. I have tried the REISUB and the virtual console (ALT+CLT+F1), but nothing works when it freeze up, and the only thing I could do is a cold shutdown. I am worried about that this will physically damage my computer, is there anything I could do besides reporting this as a bug? Thank you for your help in advance.