Current status - have tried changing the following;
1. BEFSR41 V3 - two routers tried both the same.
2. Different PC's connected to routers - hence different cables, ethernet cards and ports on to the routers. Not to mention XP/Win2K.
3. Various MTU, DDNS, Dynamic Routing, MAC Clone Enable/Disable, Passthrough settings.
4. Firmware issues on routers.
Still getting slow page access, attempting to go to ntlworld.com - instantly says found page, opening page...... 30 seconds later the purple broders are visible - takes nearly 3 minutes to load page fully - instant if directly connected to modem.
An NTL engineer - i found a really really helpful one - could see that the signal strengths still fine and ping times to the router/sacm where good.
Only things left to change i can think of are the SACM itself, and the cable from SACM to the router - even though it is the same one i use for direct connection - only thing i can think of is the router is putting an impedance/resistance miss-match to the router, or there is a slight fault in the cable which the extra load of the router exploits.
Hey ho