I purchased Blackberry Curve 8520 last month and I am really enjoying its features. But sometimes I face this weird problem. The touchpad has started malfunctioning. I am able to click but unable to move the cursor properly in any direction. I am unable to find out what must be causing this behavior of my Blackberry Curve 8520 touchpad. Does anyone know the reason behind this? If anyone has got solution for my problem then please help me. Suggestions will be appreciated as I desperately want to fix this problem.