How slow a card will actually work on the 150 ? I picked up an A-Data 16GB for $32 CDN this week, it claims read/write of 22/10 MB/s , but I've gotten maybe 7 MB/s write speed max with various testing. I'm recording some trees in the wind right now, getting my batteries and such going, and.. is there a warning message that comes up when the card is too slow? Do you even know if/when that happens?

I've can record about 101 minutes it seems on a card, which is fine for me, I could be happy owning only two 16gb cards, my Netbook is never far away.

Just wish there were a way to read them faster, it looks like 20-22 MB/s is the max speed any card reader goes.

You can use a Class 2 card to record the lower-quality HE and HG modes. It requires a Class 4 card to use HA or PH mode.

If you put in a card that doesn't have a speed class rating, or that has a rating lower than 4, it will display a message saying "can't record PH or HA on this card."

Interesting.. I put in that slower card, and next time I looked, the screen says SYSTEM ERROR .... So I rebooted, and it took a few mins to repair the footage.

That kinda worries me.

So I running some really slow SD cards I have laying around, see what she does with those.