I am not sure it is the router or not. I had blazing speed until about 2 days ago. Something has changed and I am not sure what it is. I have the latest OS 10.5.2 and Safari 3.0.4. I have had those for a while w/o problems, but the past 2 days I have experienced really slow connections to websites. I haven't changed my router settings. I have also experienced it at work using a different router. Prior to about 2 days ago I had zero problems.
Basically when you type in an address in the address bar area, the blue progress bar stalls for a few seconds (around 10-30 seconds) before loading the page.
When I typed in the IP address for google it did load right away. Your suggestion about going into the router doesn't work if you don't have access to it, like the router at my work.
I have also noticed that Airport is constantly scanning or at least seems to scan more than it should.
Here is a link talking about that.
http://discussions.apple.com/thread....sageID=6773006