Help, my system gave me a root access!

[vitaliy]

Hi guys, a werid thing happend yesterday. I decided to run Deja Vu back up utility overnight. In the morning I tried to login to my account with my username and my password, however the system gave me 'root' access. When Finder started, I saw a 'root' home directory, and a desktop that did not have any of my folders on it. However, the dock had a configuration of my, non-root, user. Everything else referred to 'root'. For example, the logout menu said "Logout System Administrator." Has anybody encountered anything like this?

I tried to logout, but it would not let me. I had to do a cold boot and when I logged in again, everything was back to normal... Any ideas?

P.S.: I did not enable 'root' account, so it is not there by default.