Leica has found the root of the problem with SD cards corrupting in the M9, and has promised a firmware fix.
By Tim Barribeau on October 11, 2011
Earlier this year we reported on problem's with Leica's M9 eating SanDisk SDHC memory cards, which caused not only the camera to crash, but the images to be lost and the disk rendered useless. Leica acknowledged the issue and has been working on a fix, and it seems that they've finally found one. An update on their website says:
Do the Leica M9's electrical problems go beyond SD cards to battery woes too?
By Tim Barribeau on August 15, 2011
Earlier this month we reported that the Leica M9 was eating memory cards, which at least partly prompted the German camera maker to issue a public statement on the matter over Facebook — but it looks like the problems might not stop there. One of our readers reached out to us about the Leica M9 having some pretty bad battery problems.