The kernel-pcmcia-cs package includes the man page for iBCS in addition to the man pages that are supposed to be there. The kernel-iBCS package includes this man page as well.
*** Bug 4800 has been marked as a duplicate of this bug. *** kernel-pcmcia-cs-2.2.5-15.i386.rpm contains /usr/man/man9/iBCS.9 which already belongs to kernel-ibcs-2.2.5-15.i386.rpm