One of the first thing that I noticed in Lion was the huge font in the Finder sidebar, which IMHO makes the whole Finder window look very ugly:
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The size of the font can be quite easily changes, but the option shows up in a not so obvious location; under the General preferences window within your System Preferences:
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Clik here to view.If you change the “Sidebar icon size” to Small, your sidebar should start looking something like:
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