Found in 3.4.1 final Italian under Win7.
In Calc, Draw and Impress the styles categories at the bottom of "Styles and formatting" window are not all localized and most still in English.
In Writer it seems OK.
It's a regression against 3.3.3 and 3.4.0
*** This bug has been marked as a duplicate of bug 36706 ***
Bug 36706 in which version was fixed?