[Totally rewritten on 9.1.2016] It happened again today (loss of indicator-3 applet) so I have taken the opportunity to do step-by-step screenshots of condition and recovery process - and something else - in my original post on this issue I stated you can drag the indicator-3 applet to where you want - now remember that Zorin specifically places the applet on the far right - I suspect putting it anywhere else causes issues - for me I wanted to have the 'show desktop' at the end of the panel (like Windows) and wonder if this is what is causing the issue? Anyway here are the screenshots from my modified Zorin DE (default):
1. Missing indicator-3 applet (needed for powering off as I replaced Zorin Menu for GnoMenu):
2. Right-click the Panel to select 'Preferences'
3. Switch to 'Applets' Tab when 'Preferences' window appears:
4. Select the applet that is having issues in the 'mirrored' panel at bottom of 'Applets' tab by left-clicking it then click on the 'up' button to de-activate it:
5. Now as you can see the 'indicator-3 applet' has been removed from the panel leaving just the 'weather' applet and 'show desktop' applet:
6. Now scroll-down the main window in 'Applets' tab to find 'indicator-3 applet' once more - the simplest way to do this at this point which is what I did is to 'double-click' it with left mouse button:
7. 'Voila!' - the applet is back on show again:
Now I don't know if moving the indicator-3 applet is an issue, bear in mind I have seriously modified my Zorin DE to have a transparent panel and to get GnoMenu back:
which does not affect the panel as such, it is just an observation that the Zorin Menu' and 'indicator-3 applet' are like 'bookends' (the best analogy I could think of at time of posting!):
[UPDATE 10.1.2015] Well it is still disappearing so I have given up on this one - this is what I have now (only downside is no nm-applet (network manager applet)]:
The only issue I have is that I have had to use the 'Cairo Menu' in the Applets Tab to get the look of Zorin 6 back - couldn't replace the old logo on GnoMenu - even though I renamed existing logos in the Button folder of Themes!
