Maybe you need to take a look at the peer, why is it advertising so many prefixes? The "several next-hop without network address" is due to how the output formatting is done, these nexthops will correspond to a prefix further up in your output, se it...

The default value to start nagging you about maximum prefixes is at 75% of the configured value, in your case at 1.5M of your 2M maximum prefixes value.The reason you are seeing two instance of every log is because you are running a system with dual ...

This slide from Cisco Live presentation BRKARC-2003 describes more in detail which kind of memory is the difference and what it us used for: 

Maybe missed during the upgrade :). If you install it the commands should appear again.