Just got an E63 as a present, and I'm having trouble connecting to my home WiFi.
I've added the phone's MAC address to the router's list (MAC filtering is on), and when I begin to surf, I get a "Web: Gateway not found" error.

I googled a bit, but found no definite solution.

I've tried removing the security password of the router (WPA/WPA2), and I could surf fine.
Why not just keep the security disabled? Besides, I have MAC address filtering anyway.. Well, I just want to have the extra security. I'm also worried I'll have similar problems when connecting to other WiFi hotspots.