on xcode 3.2.4, are frameworks locked?

I just update xc开发者_C百科ode to 3.2.4 and I notice that all my frameworks has like I lock in it. Is it suppose to be like this? If not, how do I unlock them?

Here is a screen capture. One image is better than a thousand words.

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this is not a problem, or unusual. it means that you're not able to edit the files without taking a few additional measures.