Here's my problem with my M92.
I installed the file manager from this link:
http://translate.google.de/translate...D22820&act=url
After that, every time I try to copy/delete files on the internal memory it gives me a "Read only filesystem" error.
The same thing happens if I use Calibre.
I don't know if it's because I installed the file manager, but that is the only "unusual" thing I did before the problem appeard.
Thanks for the interest!