4. Mars 25/25R and 55 devices running any version of code below 6.0(4) will not display the correct serial number when using the "show inventory" command. They will instead display the Eth0 mac-address. The serial number on the outside of the physical chassis can still be used to determine serial. (Hopefully the sticker is right)
<B>Conditions:</B> Any new MARS 25/25R or 55 manufactured after June of 2009 and reimaged for any reason to a version below 6.0(4).