Integer fields are incorrectly formatted as currency fields by default when creating tables via the UI. Confirmed in bug 67179. Alex
I think this should have been fixed in (i.e. not reproduceable any more for me): http://cgit.freedesktop.org/libreoffice/core/commit/?id=00d3a96936acba0032caaf01b4eb466849564708
Can't confirm this bug for LO 4.2.0.0beta1 (2013-11-23). Works right with the embedded database.