Hey folks, my GH1 was telling me things today that made no sense - then later claimed it never said them! On my way in to the office today, I stopped and took several images of the twilight and lamplit local park. I tried to bracket a few of them but had set the lever to burst not bracket, silly boy. Later I was trying to play back my images on the camera screen (of which the counter claimed to have about 25). I saw a black screen with some message about VIDEO FORMAT CANNOT BE DISPLAYED, or some such. Well, I had taken an AVCHD video among those 25 shots so I presumed that could be an issue with one image - but I could scroll and watch the counter change, yet none of the still images would show, each one claiming to be an unhappy video. Weird! So I changed setting to MJPG video and took another short video thru the office window, and a couple snapshots too. The camera now showed about 30 images on the chip - but none of them would play back, all claiming they were videos with issues. I reset all internal settings and went back to my real job. On the way home I tried to swap for a 16G chip, but the camera couldn't read it so I went back to the 4G Lexar. I pulled the camera out after dinner to check one more time - and there were my park and office images from earlier in the day, including the mjpg video. But wait: the counter is down to 25 again.. some earlier shots had gone missing! I've since taken more images (after formatting the card), and can not duplicate the earlier problem. I've shot stills, bracketed shots (successfully ), both types of video... with no playback issues at all. I cannot find my video-error message in the list of messages on pgs 170-72 of the manual (I just knew I should write the message down verbatim, but I was sure I'd keep seeing it!). However, once or twice I did see "Thumbnail dispayed" on an early-morning park shot.. that one's on page 178 and was shown with an image this camera definitely took. Now I see that one of the park shots claims to be 4000x3000 but it's more like 4000x2400 - the bottom of the image is missing, not dark just absent! I believe this is the image that showed the "Thumbnail displayed" message. During my coffee break at the office I had taken the snap/video/snap trio. At 8:13:19 I have a jpg taken at that time matching the video's 1st frame (it's even 16:9), but a video has the date stamp 12:13:19 (before the park images) - so it either jumped from Pacific to Greenwich time or simply lost its mind. And do mjpg movies take a still frame as a normal jpg at the beginning? That's news to me. Now this isn't the first time I've wondered about this GH1, but other times I was hasty and did not get to test for problems or put it down on (virtual) paper. I suppose that all this could be a sick SD card, but given that it also disliked the other chip (which is also happy again now) that seems less likely. This note will go to Panasonic techies soon, but I wanted to hear if others had Lumix issues similar to this. Or at least have some one tell me I'm not crazy - thanks? Just for grins: a bit soft, sad to say.. not to mention truncated!!