md5sum discrepencies

[Ryan]

Hi all!  I've recently installed and yum updated 2 indentical boxes, and
for fun and good measure I was running md5sums to see if the updates
worked correctly on both.  However:

[root at tsuji etc]# md5sum /usr/sbin/sshd
61759cb28ff270f794a2e7efc15cb965  /usr/sbin/sshd

[root at eri proc]# md5sum /usr/sbin/sshd
1773adfda131e2496fafd898747245e2  /usr/sbin/sshd

Any ideas why?  This also concerns me:

[root at tsuji etc]# md5sum /bin/ls
aad0775ac64588d61d258fabd2a777e1  /bin/ls

[root at eri proc]# md5sum /bin/ls
5101a32ed2e5680ccf49190bb42f0a7b  /bin/ls

Both boxes are dual homed K6 450Mhz.  Anyone have any suggestions?  I
would figure they should all be the same, but I've seen stranger things. 
Anyone know what the sums should be, or can point me in the direction to
find out?

Regards,
Ryan