I got an email yesterday from Blackberry announcing the release of an Official OS 188.8.131.523 for Storm 2 9550 update.
Only immediate difference was the tactile feel of the screen, much better and lets me type SMS messages faster.
Although upon waking up sometimes it takes REAL long to let me enter my password. it lets me answer the phone immediately, so that SUPER LAG doesn't affect the phone side.
Go to BlackBerry - Update your Device Software