I have two Debian 7 machines and one of those reports "3.2.60-1+deb7u3" as its kernel release and other one reports "3.2.54-2" as its kernel release. Why does the same Debian release have different kernel versions?
For Debian 7 (Wheezy),
3.2.60-1+deb7u3 is from the package
linux-image-3.2.0-4-486- Do a
dpkg -l|grep linux-image on the other machine and check if it uses the same kernel package. If it does, use apt or aptitude to update the machine.