Have trouble loading more than a couple of pages

Pages stop downloading on home web sever

[quasi]

I'm building a website for a cycling group I'm in and this is my first attempt at a
dynamic website run from a home computer. So be gentle.
I'm using a linux Fedora Core 1 box with Apache, MySQL, and php.
I can access and test the site from the LAN.
However, when I attempt to hit it by the routers IP I
can only access a couple of pages before they begin to stop loading and time out.
After a few minutes I can access again and the same thing happens.
I see nothing in the apache error logs and I can still access the site from the LAN.
Does anyone have any suggestions?

[Jon_King]

Do you have a static IP for your home server?

[quasi]

No I don't. Once the site is finished I plan on using a virtual static ip service.
However, the ip has not changed in some time.

[quasi]

A new router seemed to have fixed the problem.