I just installed a smc network card in my 1.25 dual G4 mirror door drive. Everything worked great. Then i pluged in my second display. A few min. later kernal panic. So here i am thinking that there is some compatiblty issue, but to make a long story short i had stupidy put the network card right next to my graphics card. It was generating so much heat the the (cheap) network card no longer functioned correctly. I moved it to the other side of the mo-board, and now everything is great and stable. No more kernal panics. Any one else have a problem like this before?