Comment 199 for bug 439448

Maybe I am starting to figure out something...
I've got a dual monitor configuration (not xinerama) and, since i installed the second monitor, this bug we're talking about always happened on the left one (the principal).
Interestingly the icons on top right are not the same: wireless is present only in the left monitor, the email and the audio icon only on the right.
more interestingly some of the icons are duplicated, as the shutdown button and the "session indicator" button.

1) Most of the times I encounter this bug the shutdown button disappears and the session indicator appears duplicated.

2) Most of the times the shut down button is not disappeared, the session indicator one appears corrupted.

3) In this precise moment my right screen icons are regular; on my right (principal) screen all the icons are on their place but the "session indicator". It is duplicated, visible and working on the right screen, not visible yet working on the left one.

Concluding, I firmly believe the problem of the visual corruption relies in the session indicator applet (which may explain why previous ubuntu versions are not affected by this bug)
it may sound complicated, so I am adding a couple of screenshots...