The trackpad contacts underneath could be dirty, could be a moisture issue.
Have you tried rebooting your Curve?
1. If any post helps you please click the below the post(s) that helped you. 2. Please resolve your thread by marking the post "Solution?" which solved it for you! 3. Install free BlackBerry Protect today for backups of contacts and data. 4. Guide to Unlocking your BlackBerry & Unlock Codes