Ubuntu – Unable to add the Stackapplet to panel

I'm running Ubuntu 10.10, and am trying to add the StackApplet to the panel.

The steps I'm following are, just to be sure I'm not doing something obviously wrong:

1. Right-click on the top panel
2. Click 'Add to Panel'
3. Select 'StackApplet' from the menu dialogue that appears.

Doing this causes a small, roughly 1px², grey square to be added to the panel, but with no indication of why the StackApplet isn't responding/loading. I've tried adding to the panel, then restarting gdm and also adding to the panel and then restarting the system. Neither approach seemed to achieve anything.

I've also completely removed/purged, and then reinstalled, StackApplet via Synaptic in the hope that might fix any dependency issues, to no avail..

Obviously there is further information needed to answer this question, but at this stage I don't know enough about what information might be needed, or, in most cases, how to find it. I'll do my best to add any information requested in comments, though, to try and solve this.

My thanks in advance, for any and all help and guidance anyone can offer…

Questions I've read through prior to asking:

• Stack applet was not starting automatically

  • Don't seem to have the file: ~/.xsession-errors
  • Didn't have, but did create, the file ~/.config/autostart/stackapplet.desktop with the contents suggested in the accepted answer.

• Can't add to panel nor delete panel

  • Haven't tried reinstalling gnome-panel, yet, mainly because I've read elsewhere that this may cause a world of pain. If that's wrong, I'll happily give it a go, though.

• How can I add the Network Manager Applet to the panel after removing?

  • Tried re-adding the notification area to the panel, which worked (in that it added the notifcation area), but didn't resolve the StackApplet problem.

Edited in response to @EvilPhoenix's answer:

StackApplet is run via a different system. run StackApplet from Applications > Accessories. It will then turn itself on then put itself automatically into the system tray

I don't appear to have StackApplet available in the Accessories menu:

Though I do have StackApplet installed (according, at least, to the Ubuntu Software Centre):