I have a network running 2003 Server, with approx. 300 computers. (win95 - winXp Pro)This past week 5 or 6 different conputers (xp pro) have randomly lost their connetion with the domain controller, not allowing me to log on. To fix the problem, I would log on locally, join a workgroup, rejoin the domain, reboot the computer, and everything works fine. Any idea as to why so many computers have randomly lost their connection with the domain controller?