I didn't know where exactly put this bug since it comes from .NET Framework 3.5 LangPack.
Somewhere in my project I use PropertyGridView. There is a position on this view called in English "Misc". Unfortunately in polish translation is a misspelling. The word misc which comes from miscellaneous means in Polish różne. In current version of .NET Framework 3.5 LangPack there is "rżne" instead of "różne". Unfortunate "rżne" has meaning like "fck" in English, so it would be pleasant to change it to correct form.