Cisco 1605 Router " Running Default Software

There are two models of 1600 - plain 1600 and 1600-R The "R" means Run from RAM, where the older models ran from flash
http://www.cisco.com/warp/public/cc/pd/rt/1600/prodlit/895_pb.htm

these are 1605R... but i have two 1605r, one say "running default software' and the other says " system image file is ....... "

What command are you using to see this output?
'show ver' ?

yes, sho ver

I cannot replicate this message. What ROM version do you sho on this 1600?

C1601-R#sho ver              

ROM: System Bootstrap, Version 12.0(3)T, RELEASE SOFTWARE (fc1)  <=====
ROM: 1600 Software (C1600-RBOOT-R), Version 12.0(3)T,  RELEASE SOFTWARE (fc1) <======

C1601-R uptime is 0 minutes
System restarted by power-on
System image file is "flash:c1600-y-mz.120-18.bin"

However, I did find in this document: http://www.cisco.com/en/US/products/sw/iosswrel/ps1826/products_command_reference_chapter09186a00800d9c3d.html
Show Version Field Descriptions:  Running default software :

"If the software was booted over the network, the Internet address of the boot host is shown. If the software was loaded from onboard ROM, this line reads "running default software." In addition, the names and sources of the host and network configuration files are shown."

This problem turns out to be a bug in the IOS.

This is not affecting the router's job or routing.

Thanks for your help.