Updated to 151 A9 - Gnome has lost all its menu bars and panels when you log in
I'm documenting this for future users who have the unfortunate experience I had.
So, you've just updated OpenIndiana to A9 and now when you log into gnome its all messed up. There is no menu bar etc.
There is a fix, provided by the ubuntu experts not the solaris guys (Cause they're all about the command line!) joking :).
Log in to gnome
On the desktop background (which is all you have) right click and open terminal.
In terminal do the following:-
gconftool --recursive-unset /apps/panel
rm -rf ~/.gconf/apps/panel
This closes the panel application (which is your menu bars), then clears the panel applications config, then kills panel, which eventually reloads itself with a default config, restoring everything.
Suggestion would be to add this process to the update package possibly?