This happens to me in both Thunderbird and Firefox. Occasionally at random, the hand cursor will become stuck. I cannot do ANYTHING when this happens. The keyboard becomes completely disabled, and the mouse too, other than being able to move the cursor. I have no choice but to force a power down. VERY annoying. Especially when I've been coding and I have tons of crap open. One of the reasons I switched to Linux was to prevent having to reboot as often as I did with Windows but I find myself rebooting at least every couple weeks because of something like this. Not cool. Has anyone seen this before, and is there a fix for it? At this point I'm almost suspecting it's Mozilla related but I can't say for sure, as Firefox and Thunderbird are probably the apps I happen to click in the most, as I always have my email open on one screen and firefox on the other, so even when I'm coding or something I'll be switching to that desktop on and off to check on stuff. I also have an issue in Minecraft where occasionally my character will continue to do the last action, as if I was holding down on the key. Ex: continue going forward as if I was holding the W key, or continue jumping as if I was holding the alt key etc... I have died in lava many times, or jumped off a cliff, because of this bug. I call it the Toyota bug. The reason I mention this bug is I'm wondering if it's somehow related to something within the GUI environment? I'm not sure it's Minecraft specific as I never seen it in Windows and from what I've been finding it's only Linux users who get it.