The word "LibreOffice" isn't in the dictionary by default, and it's underlined as if misspelled. This happens in both Writer and Calc, but I can't select more than one component in Bugzilla.
WORKSFORME. Could you please retry using LO 4.1.0.1? http://www.libreoffice.org/download/pre-releases/ Using 4.1.0.1 with german language and typing LibreOffice the word does not get underlined. Other test words I mistyped on purpose did get underlined. 4.1.0.1 in english also does not underline the word LibreOffice. Seems this already was added somewhere on the way.