lpd problem after update to 15.1

[Wojciech Puchar]

After update from 14.3 to latest releng 15
lpd doesn't work when printing from windows host (using lpr)

i'm getting

Aug 5 07:28:22 XXX lpd[89564]: agentki: wait4data() abandoned wait for dfA001WINDOWS2
Aug 5 07:28:22 icetransport lpd[89564]: agentki: unable to open dfA001WINDOWS2 ('l' line)
Aug 5 07:28:22 icetransport lpd[89564]: agentki: job could not be printed (cfA001winserver2.XXX)

can anyone help me what this message means

in print spooler there are df* files left, and no printing

[Wojciech Puchar]

did temporary fix - installed /usr/sbin/lpd from older FreeBSD.
but i would like to know why it doesn't work