If there were any upgrades to /etc/issue, /etc/issue.net or /etc/lsb-release, you will want to check those are still saying you have Linux Mint. May cause problems with some programs otherwise.
/etc/issue should be:
Linux Mint 14 Nadia \n \l
/etc/issue.net should be (without a trailing newline):
Linux Mint 14 Nadia
/etc/lsb-release should be:
DISTRIB_DESCRIPTION="Linux Mint 14 Nadia"