Thanks for comments and thoughts. Not sure the change of cables will make a difference (have swapped them between cat5 and 5e) but may give it a try.
There is something in the logs but don't really understand if an issue or not - any comments appreciated.
Netgear Logs
[DoS Attack: IP Spoofing] from source: 192.168.1.20, port 15095, Tuesday, April 14,2009 20:51:27
[admin login] from source 192.168.1.100, Tuesday, April 14,2009 20:47:21
[DoS Attack: IP Spoofing] from source: 192.168.1.20, port 15095, Tuesday, April 14,2009 20:47:19
[DHCP IP: 192.168.1.100] to MAC address XX, Tuesday, April 14,2009 20:47:07
[DoS Attack: IP Spoofing] from source: 192.168.1.20, port 15095, Tuesday, April 14,2009 20:46:49
[Initialized, firmware version: V1.2.0.8] Tuesday, April 14,2009 20:46:49
However, the IP comments did ring a bell. I get different IP addresses between routers. Netgear seems to be on xx.xx.213.xx and Linksys on xx.xx.219.xx but this may just be because I need to reboot the modem each time.
The speed differences are quite dramatic!
Via Netgear
Via Linksys (that is a bit higher than normal!)
