I went to the NYC store recently, hoping they'd upgrade it. Problem is, they said I have a German version of the N93, and the store only supports the English version. They couldn't read my phone when they hooked it up, supposedly.
Funny thing is, my N93 has all menus, text, etc in English. I did think it was odd that all the materials in the box in which it came were all in some foreign European language when I first got my phone.
Since I've heard of bugs in the V20 firmware, I'll wait until a newer version is released, if they do at all. For now, I'll stick to rebooting my phone once or twice a day to prevent it from freezing up. Kinda reminds me of the old Windows95 days...ha!