[Leica] M9-SDHC Compatibility Issues

[os.penguin at gmail.com (Forrest Herr)]

> what's interesting is the admonition against formatting your *older*
> cards--by any means.


    The reason they are advising against formatting your older cards
is because Flash memory has a finite number of write cycles.  This
means that if you perform lots of write operations on your Flash
memory, eventually it will wear out, and you will experience data
loss.  The other side effect is that your camera might behave
strangely because it is trying to read or write to "bad" sectors on
the memory card, which can cause the camera to lock up.

It sounds like users are experiencing problems with bad memory, or
heavily used memory cards.  So if you're shooting professionally it
would be prudent to cycle your older memory cards out of use after a
year or two.

-Forrest