After waiting two months, my replacement card is finally here. Just thought I'd update that I finally got it.
I've been using an old 1G card in the interim and it has worked flawlessly. I'm going to assume this new card will work fine - it's class 2. If there's anything to report, I'll check back in. I sure hope not though. Thanks for all the work everyone - it was a great team effort. Thanks especially to Jsourp.