Can not sudo in ubuntu 12.04

[LT72884]

Ello all. I am running ubuntu 12.04 in vmplayer. When i open a erminal session, it syas i am running as:

guest-gT6v5g@ubuntu:~$

then i try to run sudo and get the following

guest-gT6v5g@ubuntu:~$ sudo
sudo: unable to change to sudoers gid: Operation not permitted
sudo: setresuid() [0, 0, 0] -> [115, -1, -1]: Operation not permitted


why cant i run sudo?

Also it says i do not have permissions to view my home folder.hahaha

thanks

Matt

[LT72884]

I will say this, every time my vmplayer starts, i log into to my account not guest. But i just noticed that it still says guest. odd.

[ajgreeny]

You do not run sudo with that sole one word command; you use
sudo commandor have I totally misunderstood what you're doing?