Finally swapped my 1GB card back into the Nokia. When I put the 2GB card in my card reader and attempted to mount in on my Mac it refused. Trying to run a disk repair on it failed. So I had to bluetooth my files to my Mac and then reformatted the 2GB and put it in my camera.

Sad really. a 2GB card only showing 1GB capacity (to the Mac) and ~500MB to the Nokia.

I haven't encountered problems with 1 gig or 2 gig cards despite extensive testing. I have had one problem with an old 32 meg card but there are mitigating factors so I can't blame the recent update alone.

I'm not moving up in card capacity until I see a definitive answer that this is been identified and corrected...

EDIT: I still think we're seeing something analogous to the old high-density floppy incompatibility issue. Remember when they went from 720K to 1.4 meg, and suddenly a floppy could be read in one drive but not another?

At least the floppy incompatibility issue could be identified.. it was about physical alignment of read/write heads. The track written by one drive wouldn't be placed exactly where another drive would read it. That shouldn't be an issue with flash..
I'm worried about fundamental electrical interface problems. Let's hope it turns out not to be that bad.

My concern exactly.

I had problems initially with my two 8GB SDHC cards, using the latest firmware. Here was my solution:

1.) Do a fresh flash to the latest firmware.
2.) Flash to the Kernel listed in the following thread: http://www.internettablettalk.com/fo...t=kernel+flash
3.) Power on without any cards in the device.
4.) Power off, put cards into the device, power up the device with the cards inside.

If you're willing to backup/reinstall all of your stuff to salvage this card, it might be worth it. When this happened to me, one of my cards claimed that the partition had been sized outside it's limitations, and I couldn't fix it with fdisk or parted. For me, the important part was to give it a power cycle without any cards, and then let it load up with both cards in there.

Admittedly, I was not too pleased with this solution, and I wanted to tell Nokia that on the retail box, under "System Requirements" it should say "Magic." But, I was able to get both cards working, and haven't had any issues since then. Although, I do not, ever, try to hot-swap, or remove them.

After losing 4 cards (1 G miniSD, 4 G ultra SD and 2 x 2 G SD, all Sandisk), and not being able to recover any of the I was about to give up. In my previous post I asked if anyone with a Kingston card had had any problems, and no one responded, so I tried one: 2 Gig SD. Its a week later and no problems (which is an excellent improvement on the half day that I got out of the las 2 sandisks) I have not been treating it with kid gloves either - have loaded a few movies and a number of albums onto it via wlan as well as usb between the n800 and pc. So far so good.

if anyone knows of a blown Kingston please report here.

Request for the moderators: is it possible to have a poll so people can give stats on their experiences?

No problems with Kingston 2 x 2GB SD. Working just fine.

Wow, looks like I wasn't the only one with SD card issues. I just recently solved my problems.

1st card died... bla, bla, bla
2nd card died...bla, bla, bla
3rd card died...bla, bla, bla

Bought a Samsung blackjack, problem solved. N800 is now resting comfortably in my junk drawer. May be packing soon for a vacation on Ebay
I'll wait 3 months for Nokia and its developers to try to resolve this with a prooven fix before sending it on an ebayvacation.

Good luck to all of you.

@pieter_jh:
I have used a 1GB Kingston SD card in the external slot since I bought my N800 in January. I occasionally swap it for other random cards (from camera etc), but most of the time it sits in the external slot. No problems whatsoever so far. I upgraded to the latest Nokia kernel the day it arrived.

i wonder are 'old' cards is affected by this bug? for now im using my old 128 SD and 256 MMC's and had no problems even under hard usage (and with 4 configs: old firmware, old firmware + SDHC patch, new firmware, new firmware + 48 Mhz patch (that is atm)). so is it an 'only SDHC bug', or maybe 'only >1GB'?