While I was doing so work I accidently knocked the power cable out the back of my PC. Since then I have been experencing no or extremely limited connectivity through my network card.
I have re-configered the network settings, changed it from DHCP to static IP, after I did this I did start getting slightly more connectivity through the network card but only just.
After pinging a number of other systems on the network as well as the router I have managed to get 1 100% loss, 6 75% loss, and 2 50% loss pings.
This is a Windows XP machine with the network card in build into the mother board. No other computers on this network have been effected in the slightest.