I faced some laggy browsing with 1.1. I realized there was some junk from last version 1.0 because my add-ons and bookmarks were still in place after installing 1.1. I wanted a fresh start so i backed up and removed /home/opt/mozilla/fennec folder and then reinstalled 1.1 which has quite a decent performance now.

Still I hope 2.0 brings faster scrolling and rendering and mouse cursor support.