I can't get any accented characters. When you hold down, a vowel and move the trackball, it just gives you a capitalised vowel.

I can't send a picture straight after taking it -- it says "could not attach the message file".

It seems to be using up more battery that whatever 4.5 version I had on before.

It seems to be using up more memory for the same apps than the previous version -- i even got a new pop-up menu telling me I had no memory left and offering me the opportunity to delete certain apps by ticking a box beside them and scrolling down to 'delete these apps' at the bottom

Same old browser -- no improvement there that I can see.

Still no way to hide video file -- so if your kids get hold of it when you're asleep, they'll see 18+ stuff like The Sopranos, because it omes up under the 'videos' file like everything else.

Wi-fi is still REALLY patchy -- basically it will usually log on to a network, but you won't be able to get your mail until it logs onto the BB server and you get a green tick in the box (not a white bar), and that may or may not happen. Extremely annoying, undermines the whole point of a BB.

Overall, it's a nicer OS, but a very minor upgrade. I'm going to try to find a newer one, or revert to 4.5...