Yesterday I was playing a game on my G4 Powerbook and in the middle of playing I got an overlay screen that said something like "You must power off your computer.." and explained how to hold the power button down until iit turned off. It also explained it in other languages. So I powered it off and waited a few minutes. When I turned it back on, the laptop powered up but nothing came on the screen and I didn't get the startup noise. I powered it off and on again and it finally started. Once it was almost all the way into OSX, I got the above screen again. The above just repeated it self again. After the third reboot I was able to use it and viewing the log file I determined it was some kind of Kernel error. Since then it seems the laptop is lagging a lot more. It seems like it's paging a lot more (using the hard drive as memory). This could just be in my head but I'm not sure. Anyone have any info about this?