I was having a problem with my MMC yesterday, it wouldn't let me install anything even though I had 26Mb free!
Kept on coming up with some memory error.
So I formatted it and it seems to be working ok now!
Is there an app that will check your MMC to see that it is working ok?
Also is it possible to compress your memory card so you get more space?
Thanks!
!EDIT!
BTW is the MMC covered in your years warranty?