Logging ssh and scp

SSH sessions get logged in '/var/log/system.log'. SCP uses ssh, and thus gets logged in the same place.

MacBook Pro Mac OS X (10.4.6)

Is there a way to increase the logging of ssh? I'm having an issue where I successfully log in, but immediately get kicked out with no errors displayed. The system log doesn't provide any clues, either...

Here is info from my client running in -vvv mode:

Last login: Thu Sep 14 11:24:49 2006 from <remote_host>
Welcome to Darwin!
debug1: client input_channelreq: channel 0 rtype exit-status reply 0
debug2: channel 0: rcvd eof
debug2: channel 0: output open -> drain
debug2: channel 0: obuf empty
debug2: channel 0: close_write
debug2: channel 0: output drain -> closed
debug2: channel 0: rcvd close
debug2: channel 0: close_read
debug2: channel 0: input open -> closed
debug3: channel 0: will not send data after close
debug2: channel 0: almost dead
debug2: channel 0: gc: notify user
debug2: channel 0: gc: user detached
debug2: channel 0: send close
debug2: channel 0: is dead
debug2: channel 0: garbage collecting
debug1: channel 0: free: client-session, nchannels 1
debug3: channel 0: status: The following connections are open:
#0 client-session (t4 r0 i3/0 o3/0 fd -1/-1 cfd -1)

debug3: channel 0: close_fds r -1 w -1 e 7 c -1
Connection to <server> closed.
debug1: Transferred: stdin 0, stdout 0, stderr 32 bytes in 0.1 seconds
debug1: Bytes per second: stdin 0.0, stdout 0.0, stderr 479.6
debug1: Exit status 1

man sshd
reveals that you can start sshd with a debug '-d' option

you could modify the plist at:
/System/Library/LaunchDaemons/ssh.plist
so that the -d argument is called.

Jeff