jkh@time-> more ERRATA.TXT 
Last minute errata:
-------------------

o login as root produces "login_getclass: unknown class 'root'" on system
  console.

Fix:  If you have the source distribution installed, simply
      cp /usr/src/etc/login.conf /etc
      otherwise, mount the 2nd CDROM and copy it from the live filesystem
      (cp /cdrom/usr/src/etc/login.conf /etc) instead.

o sysconfig scrambles rc.conf if run again.

Fix:  Get updated /usr/src from RELENG_2_2 branch and build
      /usr/src/release/sysinstall, copying the new binary to /stand.

      If you do not have enough space for src then you could also
      use the boot/fixit floppy combo from a later 2.2-YYMMDD-RELENG
      release to simply mount your root partition (using the Fixit
      option) and copy /stand/sysinstall from the floppy to /stand on
      your root fs.