Well, I've run TCP Optimizer and the main thing which changed was the MTU, which I increased to 1500 from the previous value of 1400 and something. I'm running Win XP Home SP3, and I think there
may be a slight improvement and consistency in my speeds since running TCP.
Still, that might be complete b****cks as well, and it's just me "wanting" to see an improvement, but at least it's not messed anything up, so I'm pleased I've given it a whirl.
Thank for all your help.