Been using Windows XP for two weeks now. Have it installed on two sepaerate computers. One used by a couple of novice family members and guests (PIII 500) and another installed for my "performance" PC (AMD 1.4). Not a lick of problems at all. Installed great, minot compatibility problems with some games. No hardware conflicts, over all very inpressed.
I loaded Windows XP on my Dell Dimension with a 700MHz Pentium III two weeks ago. It was an incredible improvement over Windows 98. I had gotten used to rebooting my PC at least twice a day to avoid facing The Blue Screen of Death[tm].
The only problem I have had is my HP Laserjet 3100 will not work. HP still has not come out with a new driver, despite the fact that HP's website still says that they will come out with one by the time MS releases XP. (Hellooooo, it's been released, where is my driver?