Hi Everett -
2008?? that seems like an excessive amount of time. I submitted by album end of 2009 and have already received my certicate. I DID register online, maybe that speeded the process.
It has always been a long wait, even when submitting by mail, but never that long ..

Dial -up can be so frustrating ..Library of Congress is encourageing on-line registration .. in the future you should try to find a friend or libray with high-speed dial-up ... Copyright fees are much lower on line than mail!

Hope you hear something soon
All the best
Joanne