I asked about this a long time ago and noone knew, and I'm not sure if it's an issue for modern FEs, but when I was using arcade@home, and switched to XP, I found my screensaver would kick in during the game after my XP screensaver time lapsed (using the PC Gameport for games, the PC saw no key activity and timed out).
THe problem was i couldn't figure out how to disable the screensaver in dos apps like I used to in all other windows versions prior.
Is XP screensaver a problem still, or do people just shut it off and use a FE screensaver? (My problem was the PC is not a dedicated game system so I use the XP saver)