I am a new user of Lubuntu running lubuntu 13.10.
I have used lubuntu only for about 1 month.
Suddenly yesterday after lubuntu booted up, all my icons disappeared and I got the message "the specified directory is not valid.(attached)
When I open the PCManFM file manager and I clicked on desktop, the folder name looks wiered.
I tried restarting the computer and then I had the contents of my home folder on the desktop (i.e Documents, Downloads, Pictures etc.)
I restarted again and now again there was nothing on the desktop(just like the first image)
Even if I add a new shortcut to my desktop, it disappears on the next reboot.
I can runn all the softwares without any problems.