I've had this MBP for the past 3 years now, was running perfectly fine. The graphics card is dead, but I never game anyways, so that's not a problem (it's out of warranty, not paying 600€ for a new mobo). Anyways, I just came back from traveling somewhere (light travel, by train) and now my fans start spinning up wildly every 3 minutes or so, for no apparent reason. Temps are completely normal, no high CPU loads, nor traffic loads (see iStat screenshot). I don't get it, anyone know what's going on? Heres the screenshots: http://imgur.com/ZJhJw2H,yV4Av2W CPU may be running a bit hot at 54°, but no reason for 6k fan speeds, right? I haven't changed anything in my routine use or installed new software either. Reboot hasn't changed anything, though while the lid is closed, or account is logged off, no crazy fan speeds. Going to reboot under windows, see if I still get the same crazy fan stuff.