This is almost certianly a compiz bug. If you use metacity (e.g. by using metacity --replace ) I supsect this bug will go away.
** Changed in: xserver-xgl (Ubuntu) Sourcepackagename: xserver-xgl => compiz -- Cannot move "Save As" box https://launchpad.net/bugs/35609 -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
