[CentOS] yum update via NX connection?

Somewhere in the process of doing a yum update from a terminal window 
open in an NX/freenx desktop session, the whole session blew up - 
perhaps when ssh restarted or when freenx was updated.  The yum update 
did not complete beyond that point and the session was gone when I 
reconnected.   Is that supposed to happen?  (Centos 5.x)

-- 
   Les Mikesell
    lesmikesell at gmail.com