openSuSE 11.3. In Language Tool > Configuration the correction entry for "nip it in the butt" reads "nip it in the budd" - should read "nip it in the bud".
Thanks for your bug report, however, this is a LanguageTool bug, please submit LanguageTool bugs at http://sourceforge.net/tracker/?group_id=110216&atid=655717 This bug will be fixed in LanguageTool 1.3.
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