Satellite 5.6 - virtual nodes shown as physical

Hi all,

I have just finished Satellite upgrade to 5.6. It seems it works well but when I go to:

Systems (top tab) -> Systems (left) -> Physical Systems

I can see that there are two hosts (RH 5.1) which are running under Vmware.
Is it bug in Satellite or is it related to RH release on these two nodes ?

Regards
Przemek