Well, I bought the Patriot 8GB mini SDHC card on May 20, and it worked well for almost 3 months. The card is no longer detected in the N810, nor can it be read on my PCs. I've sent a mail to Patriot support to see if I can get a replacement.

I'm not sure how successful that process is going to be, and I've ordered the same card from newegg while I wait.

I can't believe I lost all that data on the card though. I had a bad feeling about it, and wanted write a script to back it up, but could not decide if I wanted to push or pull (start the backup nightly from the server), but I got caught up with other activities instead. Oh well. Now I know.

-K