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Description of problem:
When rhnsd is started, it always starts by waiting a full interval
before trying to check in with RHN. This is a problem in the case of
laptops which are moved around a lot and very seldom hooked into the
network for 4 hours at a time. In these cases it results in the
laptops never checking in to RHN. 
I would suggest to start with checking when rhnsd last ran and then if
this was more then an interval ago, run it immediatley upon starup.


Version-Release number of selected component (if applicable):
up2date-4.2.5-1

How reproducible:
Always

Steps to Reproduce:
1. Start up a compueter 
2. reboot it in less then an interval (typically 4 h.)
3. repeat