Can not browse Internet from behind a Linksis WRT56G router

Hi,

I have a brand new XP pro installation on a new Dell Inspirion PC. It is connected to a WRT56G router along with another PC.

Made new high speed connection to the ISP from Dell. Connection starts with no issues, files can be downloaded at a decent speed , but IE has difficulties opening web pages. Sometimes it opens them sometimes it does not and shows Page can not be displayed. Firefox behaves a bit better but still can not open pages. When refreshed it eventually opens them.

The other PC connected to the router has no issues at all.

In brief , seems that PC is connected and can download files at decent speed (300 kb/s ) but has big issues browsing Internet.

Any ideas ?