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Description of problem:
When up2date has to update the up2date package itself,
it restarts the up2date after having updated itself.

However, this re-up2date is spawned off as a child process,
and the original up2date returns immediately, with the
child up2date running asynchronously.

This is particularly troublesome when up2date is used
in a script.  The original command returns and the succeeding
script commands try to run, while the spawned up2date is
still running in the background, with packages as yet unupdated
and the rmp database locked.

Version-Release number of selected component (if applicable):
up2date-4.4.5.6-2

How reproducible:
Always

Steps to Reproduce:
1. have the up2date package itself out of date
2. run something like " up2date -u ; echo 'returned, but not done' "
3.
  

Actual Results:  A child up2date is still running after the 'returned, but not done'
message is printed.

Expected Results:  The parent up2date should have waited for the child up2date to
complete before returning.

Additional info:

This should be considered a high severity,
as it breaks system installation and maintainance scripts.