I have noticed the same thing.
I also understand there has been some considerable internal dissent regarding NR’s endorsement (read: KLo’s school girl crush on) Romney by some of the more serious thinkers there, generally in favor of Thompson.
I’ve seen some NRO nitpicking, but have taken it with a grain of salt. They’ve made their ‘official’ announcement. Any internal stuff beyond that is just chatter.
Time will tell, but things seem to be shaping up differently than we could predict just a couple weeks ago.