I ordered a 7800GT in February, mailed the rebate in early March. Never showed up on the website so I called the number and they said it was never received. I resubmitted copies and in July received a notice that it was invalid. Called and called until I finally got ahold of someone and they were like 'ohh, ok, we will get that right out to you...' no comment on why it was initially considered invalid or anything... Its almost like they are testing you to see how persistent you are... rebates now shows as processing...
Rebates suck...