:I see that the two libc.so.4's are not identical:
:-r--r--r--  1 root  wheel  593276 May  2 16:48 /usr/lib/compat/libc.so.4
:-r--r--r--  1 root  wheel  628732 Apr 15 14:35 /usr/lib/libc.so.4
:
:They both have been stripped, so what else might be the difference?

    Hmm.  All I did was a buildworld and installworld.  I installed
    the release CD on a machine from scratch, checked out the release
    tree, and ran the build.

    Try running a buildworld on a release branch tree and see what you get.

					-Matt
					Matthew Dillon 
					<dillon@backplane.com>