Linksys Wirless Router, loses connectivity, wired and wireless

^ thats my product, wireless router.

I set this up, I'm using 128 bit WEP, everything works fine for about an hour or two, and then I lose connectivity (not from the router but from the internet). This happens to my laptop (using wireless) and my desktop (wired). The only way I am able to regain connectivity is by pulling up the GUI and going to status, and releasing and renewing the IP address of the wireless router.

Any suggestions?