It seems very strange that you might be able to add two notification area
applets to a panel (or different panels).

If you add a second Notification area, then items in the current one do not
appear.  If they did then there might be some justification for having two
notification areas available.

Given the current behaviour, it's unclear what the current behavior is. 
Strangeness includes:

1. Adding a new notification area doesn't show current items in the initial
notification areas.

2. It's unclear where new notifications would appear when that occurs (in the
first instance, the second instance or both)

3. There's no obvious way of moving/dragging items in one area to another area.


I think that some consideration should be given to this (thus the bug report)
Things that should be considered in addressing this include:

1. Should two (or more) areas be possible?
2. Should they duplicate functionality (all showing the same items)
3. Should the items they show be unique and if so, how to target a area
initially and/or move items from area to area?
4. If only a single area is possible, should the option to add a second area be
included in the Add to Panel dialog?

That should get the ball rolling on this. ;-]