Xcode 4 and debugging

I've setup a break point (Left click in gutter) in some methods. I've also wired the control to the method (in IB). However when I press开发者_StackOverflow中文版 CMD + R, it ignores my breakpoints. How do I make Xcode stop at breakpoints?

Click on Activate/Deactivate Breakpoints to deactivate breakpoints and activate it again. Then Build and Debug. If it still doesn't work then remove Breakpoints and add breakpoint again (this is what worked for me when gdb doesn't hit the breakpoint)