Comment 31 for bug 54154

I can confirm this same bug for me. is there any fix out there?
HP4050 Laserjet w/ duplex and network card, attached to local net.
duplex works fine when print jobs sent from windows machines, but KDE 4.x/kubuntu 9.x recognized duplexer, but does not print double-sided.

looking for a solution!
thanks in advance.