I have a little issue at work and hope you guys can help me to solve it. Once in a while, several users couldn't connect to file server. When users try to click on network drive, it fails. I try to ping server by name, it fails, but by IP it went through. All others servers by names all went through. I then issue command "net stop dnscache" and ping that server by name again, it went through. And users can get back the network drive. DNS server works fine. This happens on both Xp and windows 7. Do you know any way to solve it globally?