Never, and I've been running XP since before SP1. It has been run on a 733Mhz Intel machine, 1.2Ghz AMD, 2.8Ghz P4 with HT, an AMD Sempron [forgot which speed], a Celeron 2.53Ghz and an AMD Opteron [dual core] 1.8Ghz. Then again, I have always built and configured my own systems [aside from the...