I agree with Alex. That "solution" from #64 fixes it, so it is clearly something wrong with the way icons are being added to and drawn on the panel during boot. I am wondering if it occurs in a vanilla Ubuntu install, or only if another program has been installed that puts an icon in the panel. If some one can confirm they get it, even with no other apps drawing icons in the panel, then it is simply a bug in panel-applet-indicator, rather than problems with other apps interacting with the panel.
I agree with Alex. That "solution" from #64 fixes it, so it is clearly something wrong with the way icons are being added to and drawn on the panel during boot. I am wondering if it occurs in a vanilla Ubuntu install, or only if another program has been installed that puts an icon in the panel. If some one can confirm they get it, even with no other apps drawing icons in the panel, then it is simply a bug in panel-applet- indicator, rather than problems with other apps interacting with the panel.