I just configured my new VPS with Apache, PHP, MySQL and ProFTPd. I wanted to install a smtp server, but I was advised to do a apt-get upgrade first. I did this, and I got up a blue screen where I could choose between two alternatives. It said something about GRUB 2 installer. I chose the alternative that was already selected, the topmost. I chose not to update the GRUB2, and use the old one that was installed.

Now, ProFTPd doesn't start in boot anymore. I have to /etc/init.d/proftpd start every time. How do I fix this? Should I have chosen to update GRUB2? Should I do apt-get upgrade again and try to do the same GRUB2 installer again?