applet can't reconnect properly when changing interface state with ifconfig

[mallyvai]

Was trying to work with aireplay-ng and did the following:

1) sudo ifconfig wlan0 down
2) wait a few seconds, the network applet in the upper right indicates disconnection
Now, if I just wait, the network manager applet will reconnect on its own, so i need to use aireplay-ng pretty quickly.
So I do my aireplay injection test (aireplay -9 wlan0), kill it after a few seconds.
3) sudo ifconfig wlan0 up
4) Tried to reconnect to my regular network
6) The applet "spins" for a bit, trying to connect
7) Eventually gives me the 'please enter password' prompt (unusual because password is saved and i dont normally have to do this)
8) I input the password
9) Network manager spins a bit again, doesn't connect.
10) Prompts me for password again

I'm not sure if this continues indefinitely or if it just says "couldn't connect" after a while

etc.

Details
-------------
Running 9.10
------------
  Installed: 0.8~a~git.20091013t193206.679d548-0ubuntu1
  Candidate: 0.8~a~git.20091013t193206.679d548-0ubuntu1
  Version table:
 *** 0.8~a~git.20091013t193206.679d548-0ubuntu1 0
        500 http://us.archive.ubuntu.com karmic/main Packages
        100 /var/lib/dpkg/status

-------------------