Why does my Blackberry Bold 9930 scroll by itself?

Question

I have a blackberry 9930 and it seems to be scrolling by itself when I am outside. When I am inside it is fine. I tried a reset but does not work.... Can anyone help me with this problem as it is very frustrating... I love blackberry but this is just crazy....  Thanks

ttipgem · Accepted Answer

The trackpad is an optical trackpad.   Sometimes it responds that way to bright sunshine.

Protect it from direct sun exposure when using it outside.