I recently got a Bold 9700. The standard browser is pretty terrible so I downloaded the latest version of Opera mini which worked perfectly on my previous phone (HTC touch).
But i'm having lots of issues with navigating through webpages using the trackpad. I'm experiencing a huge difference in the way the mouse moves in the standard browser compared to opera mini. The opera mouse sometimes moves very slow, sometimes fast and it makes it hard to actually click a link. The mouse moves very shaky and skips positions. Especially when the that "zoom in rectangle" is connected to the mouse.
It is as if the trackpad is bugging or the newest version was not designed to be operated with that trackpad.