I have the same router it is known to have overheating issues and firmware problems, from my experience it was a great router when it worked. One day out of the blue it started overheating and having connection issues etc... so I swapped it out for a Sonicwall tz170 and never looked back.
I was in the same situation as you and I sold my cards off, why? because you can get close to what you paid for them now. The best option would be to sell them off and but a 5970 and a 5850 for trifire and a used 9800gt for Physx. this is what I plan to do until Nvidia gets their act together...
Now are you guys including physx in this, since some games are dramatically affected by it. For instance Batman Arkum Asylum maxed out to an Nvidia user is not the same thing to an Ati user.