Trackball you can change the sensitivity in option and screen/keyboard. If you are on the default OS of 220.127.116.11 you can check this by going to option and about. Upgrading the 18.104.22.168 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 22.214.171.124 http://www.blackberryforums.com/gene...ilanguage.html
directions there. As far as browser what kind of signal strength are you getting?