This has got to be one of the most annoying items with my BB8700. It's extremely minor, but a major pain-in-the-you-know-what. I keep my BB in my pocket, so I typically lock the keyboard. When the keypad is locked, the scroll wheel brings up 3 options - Unlock, Emergency Call, Cancel. Clicking on Emergency Call or Cancel performs correctly. However, the Unlock button does NOT work via scroll wheel. It forces you to use the * + (green send) button sequence. If it's not a valid choice, why continue to show it in the menu?
On some of the older firmwares (4.1.x maybe?), a quick double click of the scroll wheel would unlock into normal mode. Is there any way to get the old functionality back still using the newest firmware? Probably a pipe dream!