Pros: Battery life is improved, the tinny voice sound some have complained of is gone, browser goes back to the same location in the page when you hit the Back key.
Cons: clicking on the homescreen notification bar yields buggy results
Edit: I also lost the FB and Twitter versions on the Torch when I upgraded.
OS.161 helped with improved battery life, also got rid of the tin noise when talking on the phone and I definitely noticed a smoother web browsing experience on the native blackberry browser. I also can confirm the only noticeable issue is the notification bar doesn't load the notification until you go into it and wait a lil bit for it to load. Other then that, this leak is a step in the right direction. Lets go Rim, keeps those updates coming!