can't shutdown at all -- always reboots for me
Sorry, jeelliso, to post a "me, too!" entry, but I am having the same problem. I just upgraded to Ubuntu 6.06 and I can't shut it down. I've tried from the GUI's menu, from the login screen, and even trying to do a "/sbin/shutdown -h now" in console (non-GUI) mode.
I'm guessing there is a flag set somewhere, possibly as a "courtesy" to people who just installed the thing, but I thought I might try asking here, too, while I look through the configuration files.
Notes: Ubuntu 5.1 did not present this problem on the same machine: a Gateway G6-350, Pentium II. I used the upgrade manager to upgrade the distro.