[Mageia-dev] "adding 16777 new rpms not available in existing hdlist" ??

[Frank Griffin]

I have two virtually identical cauldron systems which update from the 
same local cauldron tree.  One consistently gets messages during "urpmi 
--auto-update" like "adding 16777 new rpms not available in existing 
hdlist" which holds up the urpmi processing for literally minutes, and 
one does not.

Does anyone know what this message indicates, what processing is 
occurring during the long delay, and any reason why it should occur on 
one system but not the other ?