I had my Kingston miniSD in the SDadapter in my computer.
I had a folder which I could not delete.
So I reformatted the card.
Every time I put it in the 6700, it froze.
As soon as I took it out the 6700 worked normal.
So I reformatted quik, full fat, fat32... error checked also..
Allways the same problem, BUT it also always ran perfect on the computer.
So I hard resetted reinstalled different Extroms, no extrom.
Re-installed base 3.3rom.
No difference.
Then I finally re-uploaded the latest rom and put nojunk extrom in.
I did not let customize, I soft reset before three secs.
Reformat card to fat, quik format.
stick card in and now finnally all is well....
I think it must have been corrupt rom when I was playing with swapping roms in winrar, so if your SD works fine in your computer, then I would point to the 6700's files... and reinstall.