Trackball you can change the sensitivity in option and screen/keyboard. If you are on the default OS of 18.104.22.168 you can check this by going to option and about. Upgrading the 22.214.171.124 would be recommended has been known to fix speed and trackball issues. Make sure you do a backup first though and follow directions very carefully. Or you could even go to 126.96.36.199 http://www.blackberryforums.com/gene...ilanguage.html
directions there. As far as browser what kind of signal strength are you getting?