Yes, they have fixed the problem with the browser, and with having to update your BBM contacts after every batter pull. I didn't notice the exceptions in my profiles but I didn't have any set up.
One thing I have noticed with this build (.45) is that after being tethered, I have to resend service books (from BIS site) before I can send or recieve any data. Even if I do register now through HRT it never gets throught, and it wont load email setup on BB, so I have to do it through the website.