Last night, I wanted to shutdown my PC after using it, but when I clicked the power icon, a tiny empty box showed with nothing in it (i.e. there's not Shutdown option)
So I thought rebooting will fix it, so I typed in my Terminal:
shutdown -P 1
After one minute, the PC got hung for few seconds, and then it suddenly shutdown, without closing any programs or anything, it did shutdown abnormally
Later, I turned my PC on and I was surprised that my user account was deleted! Plus the background and other settings were set back to their defaults, however the Wi-Fi connected automatically without asking for the password, seems like it was saved
There's the login button with Username/Password fields, I am sure that I typed them correctly but it says invalid credentials
I can sign in as Guest, but I can't do anything administrative, my user folder is still in place, but I can't access it due to being Guest
I have Ubuntu 13.04, dual-boot with windows 8