Hi all, kpfonts.sty on CTAN is newer than in TL10: TL10 : 2010/04/20 v3.3 CTAN : 2010/08/20 v3.31 kpfonts 3.31 provides commands \partialsl and \partialup for direct access to both slanted and upright \partial, independend of the [partialup] package option. -- Uwe