Well, Phantomas and Steelduck, you can say I'm engaging in "fanboyism to the extreme," but I don't see what the big deal is. Why do you HAVE to look at the photos while the card is still writing? You only have to wait a few seconds before the card writes. You cant possibly wait that long?
I'm not sure I'd say "to the extreme", but since if the M9's Auto Review is set to ON, it will let you see the picture before it finishes writing to the card, there is nothing inherently problematical about not waiting for the "few seconds" to pass.
I have Auto Review set to off. I do chimp more than I'd like to -- that is I review as I do with my GRD3 and my Epson. I have had freezes, requiring me to take the battery out and put it back in. It's not zero-byte files that bother me -- I've had extremely few, if any (The reason I don't know for sure is I haven't checked the directory on the card; I have had very infrequent instances where Photo Mechanic has shown a file to be unreadable, which may be a zero-byte file). What doesn't bother is having to wait for the buffer to clear. What bothers me is shots lost in those instances, which have also been fortunately quite infrequent, where I lose shots because I'm occupied going through the exercise of replacing the battery.
All I'm asking for is that if the camera is working too hard writing the file to allow the preview, just don't show the preview.
I discussed my experiences in a flickr discussion about frozen M9s:
"This has happened to me twice. The first time might have been my fault. It was shortly after I'd gotten the camera. I was using the new Heliar 75mm, which is a bigger lens than I've been used to, and I hadn't got used to the lens yet. I think I inadvertently was pressing buttons as I was shooting.
The second time, last weekend, this was definitely not the case. I was shooting quickly in a crowded concert, and the buffer undoubtedly got filled. I was also chimping. Then everything just froze. Nothing on the screen. Shutter wouldn't work. I replaced the battery (which was not near empty by any means. At first nothing. Then the screen lit up and said that the SD card was full. This was also definitely not the case. I took out the SD card and put it back in, and eventually, everything was back to normal. If this were a job, I would nave been extremely frustrated (well I was anyway.)
In my opinion, the firmware should be designed so that, assuming the initial problem was a full buffer, that there be a warning to wait
The camera did feel quite warm, but I was not in an overly hot locale.
By the way, I use only Sandisk Ultra cards (8gb), and original Leica batteries. "
The Ultras had been recommended in other discussions, and generally have served me well. They are listed in Leica's FAQ. I will try the Transcends, for comparison purposes at least, the next time I buy a card.
Here is a link to the Flickr discussion:
http://www.flickr.com/groups/leicam9/discuss/72157625694884289/