Has anyone else had issues with overheating? I have a UX31E. It gets very hot near where the charger connects, enough so that the heat bleeds down into the right column of keys (backspace, backslash, enter, etc.) and on the casing border to the right of that. It is enough to make it uncomfortable to type. Core temperature appears to fluctuate between 50 and 60C, which is technically in the acceptable range I think. I just bought my machine and I don't recall it doing this the first couple of times I used it.