I just got a new fonera 2100 to play around with jasager. everything seems to work fine but the unit gets pretty hot. before i bought it i read about this heat issue and some common methods of cooling it down. leaving the case off, and putting a big external fan on seem to be the most common. one "interesting" method is to make the power regulator external to the case LINK. i don't think i'm comfortable with removing integral parts, and an external fan is kinda gaudy. i did however find some very small fans and wondered what anyone though about installing one inside the case and running it off the power supply LINK. also, if you have some other "interesting" methods of cooling then please share.