xcode hangs on breakpoints

I have sample application it works fine. When i set breakpoint in my project it didn't step over from breakpoint, the application hangs with that break point its really hard to find what the problem is. With out break points its work fine.

I want to test some variables with breakpoints in sim开发者_JS百科ulator 4.0 debug can anyone help me?

Thanks in advance....

I had this issue until I upgraded to the latest XCode 4.5. Its seems to have solved the XCode - Not Responding issues and Crash. Hope this will help.