From Bugzilla Helper:
User-Agent: Mozilla/4.74 [en] (X11; U; Linux 2.2.16-22 i686)
Description of problem:
if you can log in as user. you can poweroff the computer.
Steps to Reproduce:
1.merve reyhan found this bug.she is just 7 years old.
If this is as a user who is logged in at the console (i.e., not just remotely
via ssh or telnet, so the user also has access to the power button on the CPU
case), then this is expected.