On a recent 3 day ride, it looks like I fried my GPS. In particular the last day was VERY hot (when it happened) The GPS screen simpily went off. After gtting it examined by a local rider who is an electronics tech. he seems to think I have "cooked" something. I have the GPS (Etrex Summit) mounted in a RAM holder on the bar behind the windscreen, (about where the fuel gauge is) on the BMW 1150 GS-A. I did have my IPAQ 3970 hooked up to the GPS and laying in the bar pack but it was so hot I could not touch the metal of the PDA, so I disconnected the PDA and put it in the panniers. The GPS is a couple years old and well out of warranty. I think I will have it repaced (GME the local Garmin Importer swap them for a few $100) There is no use updating to a mapping Garmin as there is no decent mapping for Aus availble for Garmin. The other option is a Magellan Meridian, as the local mapping with them is superb. I will try mounting it in the wind next time (up near the headlight switch maybe), to allow it to get some "air cooling" When I took it out of it's mount it was very hot to the touch. Or maybe stop riding when it is so damn hot... I still want to try a RAM Mount and my PDA (which has been successfully tried in my bar pack) but not when it is as hot as it is now. I might have to try to shield it some how with a housing but it still needs to get a signal and does not have the option for an external antenna.