I bought this xD-picture card with an Olympus Mju 820 Digital Compact Camera and I cannot fault it. I think previous reviewers' limitations must be more to do with the camera than this xD-picture card. With the Olympus Mju 820, I can store 999 pictures (or so it says, as I have never taken that many before downloading onto my PC) and well over an hour and a half of video. I have not tested this to its full extent, but, I can confirm that I have taken 5 minutes of continuous video with this camera, with the data being stored on this xD-Picture card.
As a test of my theory, try recording a video on the camera without any additional memory inserted, i.e. on the built in memory. Even if the built-in memory is just 32Mb, it should be able to video a 1-2 minutes. But if it stops videoing after, say, 40 seconds, then it is probably a camera limitation and not the memory card - I tried this on an old digital Olympus camera which was restricted to just 20 seconds, no matter if additional memory was inserted or not.