My wifes computer is running ubuntu 10.04. Since several days the running programs are not displayed on the panel. With alt tab you can still switch between open programs. Any idea what happened?
More than likely the window switcher got removed from the panel. Simply right click on it, and click add to panel. Then drag and drop the applet on to the panel, and it should be back to normal.
Adding more tips : Once you add the 'Windows List' into the task bar and only single folder appears on the bar, right click and remove that folder, soon you remove this new folder from the task bar all the open windows will get appeared on the task bar
Maybe the taskbar (Windows List) has been removed?
Right click on bottom panel, that click Add to panel, select Windows List and confirm.
Probably you have removed the Window List on the panel.
Right-click on the bottom panel and choose "Add To Panel" - select the "Window List" applet
More than likely the window switcher got removed from the panel. Simply right click on it, and click add to panel. Then drag and drop the applet on to the panel, and it should be back to normal.
Adding more tips : Once you add the 'Windows List' into the task bar and only single folder appears on the bar, right click and remove that folder, soon you remove this new folder from the task bar all the open windows will get appeared on the task bar