[Anyhoo]

I recently started having a very strange problem and can't figure it out at all.
First I'll explain how my network is set up and what I've already tired.
I have 2 routers between my computer and the modem, but one really isn't a router. I have a Dlink DIR-665 as my router, and I am using a Linksys WRT54G with DD-WRT (firmware hack) on it.

On the DD-WRT I have it set up to act as a wireless Client-Bridge with the WAN disabled so it acts like a fancy (and awesome) wireless network card.

Now everything has been working fine and i've been able to forward ports and all that until last night when I tried to forward port 21 to my computer for a FTP server and it wouldn't work then all the ports that were previously forwarded stopped too.

It's not a case of wrong IP address or anything like that (already checked everything) but after messing with it for awhile I noticed that:
A: my computer no longer shows up on the list of LAN computers in my router.
B: I can ping my router from my computer, but I can't ping my computer from my router.
C: My DD-WRT has no IP address on the list of connected wireless clients, it just says 0.0.0.0.

However I can use the internet just fine and ports opened with uPnP work just fine. (like uTorrent).

During all this testing I disabled my firewall, also I already checked and nothing like ICMP requests are blocked.