I'm comparing my internet connection speeds with and without the router (linksys rv042). Using BroadbandReport's speed test tool i find that my workstation (xp pro) connected directly (westtel dsl modem's ethernet plugged to my workstation) i'm hitting my ISP's advertised speed 1.5mg. When the dsl modem goes to the router the speed is 40% less.
So far, I've tried disabling the firewall both at the router and within Windows without making a difference. What's the next tweak to try?