Yep, I think they used to be the top, but I think that title is no longer theirs. I don't think people realize that times change....Asus may have been the best in the past, but that does not mean they will be forever..
That being said, every manufacturer will have some bad boards...it just happens. It sounds like you have had more than your share though
Fair share? He bought a board from a guy that 'claims' it was a fresh RMA from Asus which is highly suspicious in the first place.
As for Asus not being the best anymore, well everybody has their own opinions but so far Intel is the only other manufacturer besides Asus to offer a three-year warranty on their mobos. Unless other manufacturers are brave enough to follow this, Asus will still have to be considered one of the top, if not the top, manufacturer around. The K7M-RM is a rather old board (Slot A!), probably more than a year old. Do you think other brands would still send you a replacement?
Back to the issue though. There is probably a BIOS setting that would help. Look under 'Plug and Play' setup. . Set it to PnP aware OS (enable). Under 'Peripheral' setup, make sure any references to built-in LAN or modem is disabled.