said by anon10:

Did you not know that before you installed the firmware?
I thought the 3rd party stuff would inform you of that on the download page.

said by Rob :

Nope. No warnings. I was having problems with my router on the linksys firmware and someone mentioned to try the hyperwrt. So I installed that from here: »www.hyperwrt.org/Downloads.shtml

and the problems still continued. I noticed that the uptime reader was resetting to 0 everytime I'd lose connection, so I figured it was a router. When I presented my findings to Linksys, he gave me the above message.

I wasn't very happy!