1. I updated RHL 6.2 to 7.0 and verified functionality, including networked
laserprinter configured as a remote printer using lpd through printtool.

2. I then updated 7.0 with all the recent bug-fix rpms thru Nov 10.

3. Shutdown system to change mounting bay of hard drive. On bootup
   get message from /usr/sbin/checkpc that is can't find shared library
   libkrb5.so.3, file does not exist, etc, and similar message from
   lpd (of course), which would not start because checkpc failed.

4. Quick fix:
   a. ln -s /usr/kerberos/lib/libkrb5.so.3     /usr/lib
   b. ln -s /usr/kerberos/lib/libkrb5.so       /usr/lib
   c. ln -s /usr/kerberos/lib/libk5crypto.so.3 /usr/lib
   d. ln -s /usr/kerberos/lib/libk5crypto.so   /usr/lib
   e. ln -s /usr/kerberos/lib/libcom_err.so.3  /usr/lib
   f. /etc/rc.d/init.d/lpd start

Verify lpd process & printer functionality, and I'm done. Note that
checkpc did not complain explicitly about (b) and (d), I added them "for
completeness". (e) was necessary, but since /usr/lib/libcom_err.so was
already linked to /lib/libcom_err.so.2, I left it alone.

I don't know what the "correct" fix for this is, I didn't know how to
make checkpc look in /usr/kerberos/lib directly, so I linked what it 
needed to where it was looking. However, RHL 6.2 keeps all its kerberos
libs in /usr/kerberos/lib, and seems to run okay (does 6.2 have a
checkpc?), as did RHL 7.0 before the bug patches.

Oh yeah. The dates & filesizes of what I've got is

-rwxr-xr-x    1 root     root     256892 Sep 25 10:53 /usr/sbin/checkpc
/usr/rc.d/init.d/lpd:               2277 Sep 25 10:53 /usr/rc.d/init.d/lpd
/usr/sbin/lpd:                    499036 Sep 25 10:53 /usr/sbin/lpd

Thanks!!!