BleepingComputer.com: Mtu Problem?

well we started having problems with the internet at our house, and ended up changing the router but it ended up being a problem with at&t or whatever. anyways we got this new belkin router that supports n, g, b. but on my ps3 it says it doesnt support ip fragments. i had this on my old router but got rid of it by enabling some gaming mode, but i cant find that setting on this belkin. i changed things and opened some ports but no luck (although i did have to put my ps3 IP in dmz to get nat 2). and even wired i get the error, also i did this test on my computer with the wired connection

http://help.expedient.com/broadband/mtu_ping_test.shtml

and it fails. my router MTU is set at 1454 factory setting i believe. ps3 is automatic, but my modem is at 1492, but the ppl at at&t help said it didnt matter, is that true? could it be a confliction? and is there a gaming mode on belkins?

btw i use my ps3 on wireless and 2 computers wired on my network, but been having to switch cord from one comp to ps3 to play socom beta

also forgot to say i opened ports and stuff along with putting it in dmz, maybe overkill but i thought it would get rid of the error, but considering i still get an error on my comp with ip fragments through ethernet i doubt it was my ps3 that wad the problem

bah i might just get rid of my belkin. i just bought this thing like 2 weeks ago, i hope i can still trade it in.

Hi - just wondering if you found a solution to this problem? I've just replaced my old Belin router with a wireless N router, and I'm getting the same IP fragment mesage with LittleBigPlanet routinely dropping connections or not connecting at all.

Any solution?

Thanks
Steve