Regarding 'nikki' - have you ever approved one of her posts? Monty cannot know that the user has made 30 or 40 good posts in the past - before you have installed him.
If you have just installed Monty he will be asking you to moderate most posts until he has built up his database. When he has a sufficient number of tokens built up then these overly conservative moderations tend to disappear.
(There is also a 'learning speed' setting. Change this to be faster, if Monty is asking for checks when he doesn't need to).
The key point about Monty is that he learns through the patterns of YOUR users, and thus at the beginning he needs to be exposed to these patterns to learn - and you must tell him that he is correct or not correct. (If you are doing this and you are still getting these kind of messages you may have discovered a bug of course!)
It's hard for me to know exactly the situation because I don't know your settings. Could you take some screen shots of your settings, and your stats, and email them to me at my email address:
*****spamnet@gmail.com
with the 5 stars being replaced by monty
then I'll be able to give a better comment (or to fix a bug!).