I'm using FC3 for my dhcp server, and it runs well almost a year...but suddenly the dchp service down, I look at /var/log/messages:

05:51:21 dhcpserv named[25307]: lame server resolving '' (in 'relays.visi.com'?):
05:51:26 dhcpserv dhcpd: unable to add reverse map from to korlip-06.sentra.an.tv: timed out
05:51:26 dhcpserv dhcpd: Can't create new lease file: No space left on device

I Look at /var space on my server and still 6 GB available.

I restart DHCP service, its up but 2 hour later the service down again.

Please Help