@jimp
I had to roll back to 2.4.4 for operational reasons, so I guess the log's gone.
Not sure what the nmbclusters is you refer to. Under 2.4.4 I never had to do anything: installed software, and all interfaces were recognized.
Under 2.5 installed software, and the only thing it sees is em0, em1-em5 are like they aren't there.
I've now switched from using that system to my new MBT-4220 unit. I could try, after that proves stable, to wipe the FW-7535F clean, install pfSense 2.5 on it, and make it available on a public IP address, so you could have a look, if that should be helpful.