(K)Ubuntu Feisty. I try to ping a server on my network, and it's really really slow.
me@me-laptop:~$ ping myserver
PING myserver.MYDOMAIN (192.168.1.2) 56(84) bytes of data.
64 bytes from 192.168.1.2: icmp_seq=1 ttl=128 time=0.968 ms
64 bytes from 192.168.1.2: icmp_seq=2 ttl=128 time=0.999 ms
64 bytes from 192.168.1.2: icmp_seq=3 ttl=128 time=0.992 ms
--- myserver.MYDOMAIN ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 10037ms
rtt min/avg/max/mdev = 0.968/0.986/0.999/0.028 ms
Look at the times - all <1ms. But the total time was almost ten seconds.
nslookup is essentially instantaneous
This does not occur on any other computers, and throughput is fine. It does affect the loading of webpages, though.
I found somewhere that disabling IPv6 might help, but it doesn't seem to have made a difference.