Just got the jelly bean update, first time I've been able to use the new search feature that google has, works great! "Note to self Olympic games start at 6" Google - setting alarm for 6 o clock. Don't like the new blue " go " key on the keyboard, course I'll get use to that. Like the smoothness of everything, especially the home screens in portrait. Notification tray is much nicer now too.
Things I've found that don't work the greatest - mostly has to do with the stock browser, when I'm in bookmarks the icons flicker most of the time. Links icons and the like don't seem to be responsive, I have to click them numerous times, on Google I have to click the search bar numerous times to get the keyboard to come up. Also it seems as if the volume across the board is lower. Hopefully they're working on a fix.
Xoom-Wi-Fi / Infuse-Straight Talk / Thunderbolt-Verizon / Q9c-Verizon