Mozilla/5.0 (X11; U; Linux i686; en-US; rv:2.0b1) Gecko/20100630 Firefox/4.0b1 (build2) If you select the Heads Up Display from the Tools menu, in linux for example, when you go back to the Tools menu won't have a checkmark to indicate it is selected. The item Inspect does show the checkmark. One of the two isn't consistent. It also happens in the other OSs.
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