I just attempted the upgrade on my Storm which was unlocked for ATT and running .328.
The upgrade was as smooth as can be, no glitches. However I did find that after the upgrade non of my GPS enabled apps such as TeleNav worked
. I checked the GPS in the Options and it was set for internal, same as location aiding, etc.
Pulled the battery several times still no luck.. So now I am i the midst of going back to .328