I'm lucky enough to know an old boy who taught businesses/companys psychology in the work place! He's taught me a thing or two how folk work or don't work! The best one is delay tactics, and how far people will actually go to not do anything!
Another one he told me was to directly challenge someone on how they are behaving and it's ok to disagree with things!
So sit back and watch, think about what it is that bothers you and wether it's worth challenging about ( in a non confrontation manner) cos if you get angry, or react, you've lost.
Atb