Description of problem:
Run qmf-tool, execute "list packages" as first command.

= With 0.10-5 on RHEL5, the output is:
Traceback (most recent call last):
  File "/usr/bin/qmf-tool", line 676, in ?
    cli.cmdloop()
  File "/usr/lib64/python2.4/cmd.py", line 142, in cmdloop
    stop = self.onecmd(line)
  File "/usr/lib64/python2.4/cmd.py", line 219, in onecmd
    return func(arg)
  File "/usr/bin/qmf-tool", line 108, in do_list
    self.dataObject.do_list(data)
  File "/usr/bin/qmf-tool", line 217, in do_list
    self.listPackages()
  File "/usr/bin/qmf-tool", line 392, in listPackages
    raise "Default Agent not set - use 'set default'"
Default Agent not set - use 'set default'
2011-08-25 12:56:03 warning Connection [59526 localhost:5672] closed
2011-08-25 12:56:03 error Exception caught in message thread - exiting: Invalid argument (../include/qpid/sys/posix/Mutex.h:116)

and the program exits.

= With 0.10-5 AND 0.12-1 on RHEL6, the output is:
Exception in list command: exceptions must be old-style classes or derived from BaseException, not str

and the program keeps working.


After that "list agents" is executed, subsequent calls to list packages behaves normally (no exceptions).

The condition (unset default agent) should be handled more gracefully.

Version-Release number of selected component (if applicable):
0.10-5, 0.12-1