Different kernels on my servers?

[Knute Johnson]

So I was getting another server up and running in case my old one died 
and found they have different kernels.

Old: Linux knutejohnson 3.2.0-30-generic #48-Ubuntu SMP Fri Aug 24 
16:52:48 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux

New: Linux knute3 3.16.0-38-generic #52~14.04.1-Ubuntu SMP Fri May 8 
09:43:57 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux

Both are 14.04.2LTS.  The new one had a kernel held back when I did my 
update and upgrade so I did a dist-upgrade but it was still a 3.16 
kernel before that.  The old computer was upgraded from an earlier 
version of server but that shouldn't stop kernel upgrades? Do I have 
something set somewhere to prevent my old server from upgrading the kernel?

Thanks,

-- 

Knute Johnson