Hi I just setup my Pi tonight (debian install). Created my self a different user account as in the guide and used visudo to give it sudo control, did some python coding. All going well. I come to finish my session and considered just pullling out power cable but thought I should do it properly.
I tried the power symbol at bottom and selected shutdown - it flashes up a window asking for admin passwd but went away too quickly to do anything. I logged out of LXDE and tried shutdown and halt from there which didn't work. It said 'must be supervisor'. I used sudo su and halt -l from there which worked fine.
Anything I'm doing wrong or is something mis-configured?