6280 on Three V6.10 - application list empty and apps conflicting with....nothing!

Since updating to v6.10 on Three, I've reset multiple times, formatted
the memory card, done everything I can think of, but I keep getting
problems with the MSN Messenger app I downloaded - it says there's a
conflicting app, I click on "show" but it just shows a blank line.

Secondly, since updating the firmware, I've been unable to add apps to
the shortcut bar and nav key, as it says that "application list is
empty" - even though I have 7 apps in memory card and 7 on phone!
Very very annoying missing the app shortcuts.

Also, the "Scrabble" game I paid to download crashes the phone every
time (they refunded me on this) and the Mobilcast application is very
slow to start downloading and it stutters.

Also, the radio "up/down" keys are upside down (down goes up!) and
there's no fast forward or rewind in the video player.

Nokia blame Three's implementation of the software, Three just ask me
to do a factory reset (which I did) and the Nokia forums aren't being
much help. To be honest, I'd be happy to just get the application list
to acknowledge that there are applications there, then I could get my
gmail back on my active standby shortcut bar. Then I'd be halfway to
happy!