Breakpoints inside CCSprite::draw not working properly

Is there a particular reason why xcode doesn’t treat breakpoints properly while inside the draw method?

When I set any breakpoint inside the overriden draw method of a CCSprite, xcode stops as if the breakpoint is enabled normaly, but I cannot see the green little arrow that indicates the current line in execution, and can’t resume or advance either

I am using Xcode 4.2 with SDK 5.0 on Snow Leopard 10.6.8

My devices ar two iPod Touches, 2G and 4G, with iOS 4.2.1 and 6.0 respectively. The issue is in both cases

I am using Cocos2d-1.0.1-x-0.11.0

Any help is appreciated