dup packets???

i currently have my linux box running a wireless connection to my laptop seems to work sweet but when i ping my router i get ....

PING 192.168.1.5 (192.168.1.5) 56(84) bytes of data.
64 bytes from 192.168.1.5: icmp_seq=1 ttl=128 time=391 ms
64 bytes from 192.168.1.5: icmp_seq=1 ttl=128 time=393 ms (DUP!)
64 bytes from 192.168.1.5: icmp_seq=2 ttl=128 time=691 ms
64 bytes from 192.168.1.5: icmp_seq=2 ttl=128 time=693 ms (DUP!)
64 bytes from 192.168.1.5: icmp_seq=2 ttl=128 time=695 ms (DUP!)
64 bytes from 192.168.1.5: icmp_seq=3 ttl=128 time=1057 ms
64 bytes from 192.168.1.5: icmp_seq=3 ttl=128 time=1058 ms (DUP!)
64 bytes from 192.168.1.5: icmp_seq=3 ttl=128 time=1059 ms (DUP!)
64 bytes from 192.168.1.5: icmp_seq=4 ttl=128 time=1168 ms
64 bytes from 192.168.1.5: icmp_seq=4 ttl=128 time=1169 ms (DUP!)
64 bytes from 192.168.1.5: icmp_seq=4 ttl=128 time=1172 ms (DUP!)

anyone got any bright ideas ?

have you read the man page for ping on your OS to see what that really means?

duplicates - resent packets.. you want the percentage of these to be as low as possible

Try the following (for win32):
ping -n 100 <address>

and on *nix:
ping -c 100 <address>

This will ping 100 packets giving a relevant length so that you can see trends/patterns and an easily figurable percentage