If you’re running *buntu 7.04 or higher you might be receiving the kinit warning message at bootup. (https://bugs.launchpad.net/ubuntu/+bug/103148)
Various fixes have been reported, although most of them seem to work for some and not work at all for others. There is one way to remove the warning.. which is to disable the initrd resume function. This was mentioned by Norbert Brondeau (fix 1, fix 2). Fix1 worked fine for me, although fix 2 did not.
sudo nano /etc/initramfs-tools/conf.d/resume
add # in front of RESUME=XXXXx-XXX-XXXX-XXXX and save.
sudo update-initramfs -u
This will disable the resume function and the warning message will be removed. I have yet to notice any adverse affects from disabling the resume function as I only reboot/shutdown. If you put your computer to standby or hibernate you might want to avoid this.