press and hold the mute button on top. then when the device is in standby, press firmly down and roll to the left. dust/crap usually gets under the track balls if you keep it in your pocket without protection for instance.
yeah i'm fearing this isn't a dry or dusty clog. it feels somewhat sticky (dont ask cuz i really dont know lol). still pressing real firmly all directions. no luck yet. may have to go down to the verizon store later.
I saw this exact same thing with another VZW 8130. If you pushed too hard nothing would happen. If you were very light on the trackball when rolling it, it was fine. I even popped the trackball out of mine and put in it and the same thing happened. Not sure what the deal is.