login, telnetd not updating utmp etc on -CURRENT

I've noticed on recent versions of -CURRENT that utmp, wtmp and lastlog 
aren't being updated by login and telnetd; however, sshd still seems to be 
working as expected.  This is happening on both my systems so I'm guessing 
it's not something weird that I'm doing (although I'm open to the 
possibility that it might be!)  I've only noticed this recently as prior 
to a few days back I'd only been using sshd on my FreeBSD systems, but the 
older one's telnetd is of 13-Oct-2005 vintage, if that's of any use.

Cheers,

Chris.