This program is awesome and it would have been the first thing I used if I knew about it when I first started out mining.
I'm having some trouble connecting to this pool :
http://nrb.miners-united.com/news for Noirbits. I use the same settings in GUIminer Scrypt and it works. But Multiminer attempts to connect for a few minutes and then produces the error message "Configuration for noirbits disabled - all pools down."
I had the same problem with
http://nrb.miners-united.com. I suggest you register and add
http://noir.minepool.net:3345 as a backup in Multiminer. That's what i did and my problem is solved.
I'm having the same issue with
http://nrb.miners-united.com. And I'm having an issue staying connected to
http://noir.minepool.net. I believe it to be a pool issue and not related to Multiminer. When I connect with Guiminer I will hash for a few minutes and then hashing stops and I have to restart. Giving up on NRB for the time being as I can't find any other decent pools.