HK, summed it up. But basically there is going to be very little benefit for the amount of work involved, same goes for changing video libraries (at least for now). It runs fine on 64-bit and on most hardware as it is. It does not run on everything, eg. directx issues, but I dont think many commercial games etc run on all systems. I dont think it will ever run on every system under the sun, but what does, even windows doesnt! When you think how many posts we get here in a day (dont keep up for more than 4 days, and you pretty much cant), we get very few issues that arnt resolved quickly, its just they stand out. The hardest thing about writing software, is trying to get it working on everyone's machine. MS Windows is actually a marvel in itself when you think all the hardware out there. Apple have a pretty easy life writing an OS.