I'm using Ubuntu 12.04 with a dual monitor setup. The Workspace is spread between the monitors in Xinerama mode, not mirror. Now, the top panel is present on both the monitors. It's simply doubled. Not a big issue but since I added some indicators to the panel, the load of my little netbook started to increase. And seems that the unity-panel-service eat a lot of resources. So, is there a way to run the to panel in only one monitor, like it's already possible to do with the launcher? What do you think?
It's not possible, and I see a problem with the menus if it's done that way.
Anyway, I don't expect that showing the panel in two monitors is consuming much more resources than displaying it only in one. So it makes little sense to remove it for performance reasons.