Re: [Trisquel-users] Desktop shows no toolbar

[adel . afzal]

ssdclickofdeath posted this solution:  "If your panel disappears, press  
Alt+F2, then type 'gnome-panel' without the quotes, then press 'Run'."

http://trisquel.info/en/forum/task-bar-not-apearing
It has happened to me too.  I'm not sure why unfortunately.