Ok. I have been reading comments on this forum for the last few days and would now like to share my experience. Call me a lucky swine if you will but my wife bought me an N810 for Christmas. Having got over the initial surprise I decided to go on line and buy the biggest external memory card I could find which of course turned out to be the Sandisk 8GB Micro SD card with a Mini SD adapter. The card duly arrived and was inserted into the N810 with great excitement. It didn’t work!!!! I then googled around and discovered this forum and soon discovered I wasn’t the only person with the problem. Having read the post from Milhouse in which he advised the fact that he had raised a bug report I then went and voted for the fix. In the meantime I went and purchased a 2GB micro SD and using the same Mini SD adaptor previously used with the 8GB card inserted it in to the N810 and found that it worked. A couple of days ago I received an automated mail from a maemo support person suggesting that it was the adaptor at fault and that he used a certain adapter from :-http://www.nextdaymemory.co.uk/device/microsd_to_minisd_adapter-157076.html With some scepticism I decided to order one and it arrived in the post today. I inserted the 8GB Micro SD into the new Mini SD adapter and half heartedly inserted it into the N810. IT WORKED!!! I can now see 7.59 GB of external memory!! It would appear then that the less than 4 GB cards work ok on most adapters but above this it is a little more picky. Hope this helps others Sard