I'm getting the same problem. DFX4 new RR update.okay first let start by telling you my setup.
pc= xpc mobo intel core duo 2.4GHz
os= window xp sp3
usb live sound card
front end= Ride Runner ( recently update )
I don't know if it my computer or it happened to some of you too. my IG4 or my computer was running find when I used to run the very Old version of Road Runner until I recently update to the new july 2009 update. the problem was, every first time when i open my gps/IG4 in RR my PC is completely turn off and restart it back up as normal. then if i go back to gps screen again it work as normal. or some time it would work fine the first time when it started the gps/IG4 then after a while the pc shot down it self again. but if i'm just in the main menu listen to music or watch video is fine. the only time my pc shot down it self is when i used gps/IG4. No matter what skin i used and update all the flash and .net frame work, still shot down my pc in the gps screen. iether on the first run or in the middle of it. my cpu load only at 1-6%. i had try reboot my computer fresh hope to solve the problem but no luck. Any solution or ideas?