I have Xubuntu 8.04.3 desktop in my office daily used to do office tasks. though with the view that simple but xfce desktop used by Xubuntu is very useful in helping their daily work. the reason I use Xubuntu because my desktop computer is using old specifications, Pentium 4 2.66 GHz with 386 RAM.
But one day I lost two panels in Xubuntu desktop screen. may be this is accidentally because the computer is used by many people and they all have not understood how to use linux. to restore the lost panel I have use a simple command by pressing
Alt + F2 on the keyboard and then the run program window appears. type "
xfce4-panel" without the quotes, and click run or hit enter on your keyboard ... tralaaa the panel is return.. good luck