[xubuntu] Random/spurious log-outs getting more frequent...

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http://ubuntuforums.org – So... I have Xubuntu 13.04 installed on my Lenovo T530 laptop (~6 months old). Everything seemed to be working fine, up until a couple days ago. Then I suddenly got logged out when I went to click on some feature of the browser bar on the upper right corner of Firefox. I thought maybe I had gotten sloppy and clicked on something I shouldn't have, or triggered some 'hot spot' in the window manager, and just sucked it up and logged back in. A while later, I went to open a PDF... and got logged out again. This was very odd, and had me scratching my head, but I couldn't find any correlation s (Hardware)