Running Mint 14 Cinnamon. I added filezilla to the system tools in the menu, then right clicked on it and added it to the panel. Then nothing on the panel responded. I minimized a Firefox window, it was shown on the panel, but would not open. I removed the filezilla applet from the bar, removed filezilla from the system tools in the menu, and rebooted. Still, nothing works from the panel except menu. The mouse over an item shows the description, a right click prompts with "remove applet", but a left click on an icon in the bar does nothing detectable.
This is a serious problem. What caused this? Is there a way to fix it? Is it a known problem? I can rebuild the system at this point, but in the future, it would be disasterous.