I use SanDisk SD and CompactFlash cards, and I've had no trouble, except that when I use a SanDisk CompactFlash card in a card reader (on my desktop PC), I have to reformat the card when I reinstall it into my camera.
FWIW, back when I was deciding which PDA to buy, the response on
C/Net was less than overwhelming in support of the hp 1910 (less than 60% gave it a thumbs-up), which I wound up buying nonetheless. And as it has turned out, my 1910 has proven to be a worthy, mostly reliable unit overall. My wife just says I'm a lucky person (and I must be, to have a wife like her around!

).
My point? Sometimes products work all the time for some people, and sometimes they never work for some people. Sometimes you have to just hope you're a lucky person.... :wink: