I don't know what linux distro you are running, so no idea what update program this is, but here is the manual way to do it.
go into a terminal and type this.
Code:
sudo su
#it will ask for a password. enter it.
apt-get dist-upgrade
#it will calculate then prompt you to enter y or n. enter y then press return.
#if there are any programs it fails to update, you can do
apt-get upgrade programname