I had strange a behaviour of my 6600 too, and spent almost a month to
figure out that my MMC (memory card) was not fit correctly in the slot.
Check the MMC: when you remove the battery of the phone, is the MMC
"poping out" ? If so, you need to place it correctly in the slot (that
is the same way you initially put it) AND move the "sliding locker" of
the
SIM card one step back.
The locker that is keeping the
SIM card has 3 positions:
- fully open (you can remove the
SIM card while in this position)
- fully closed ( covering half of the
SIM card)
- and the secret half closed (or half open, as you prefere

). This
position maintains the
SIM card AND the Memory card safely in a stable
position, even without the battery to keep the MMC stable.
After I found out that, I had no trouble at all and I am greatly happy
of my phone.
Hope it's your case too. If it is, I might do picture of the differents
positions and put on my web, cause I bet there will be more queries like
that

And pictures are easier to explain that secret locker.
--
JScoobyCed
What about a JScooby snack Shaggy ? ... Shaggy ?!