At my office, I feel the vibes here and know who's the goody goody and the a** kisser to the Managers/Supervisors.  I have one person in my team that I vent to and we vent wtih each other.  I trust her.  After work, I don't think about work and leave it at work.  I found that it really helps to have someone that you trust to talk to.  I have learned that you never mention anything to your superiors about any of your peers.  They don't want to hear it.  
  So, right now, I just do my job and I love my company and some of the people I work with.  I don't confront people or tell them how they should be doing things.  I like to remain as neutral as possible.
  Hang in there Lise.  All jobs have office politics, no matter what size the office is and what industry.  Always carry a smile and that should help you get through your day.  And keep work and your personal life seperate.  I do this and it works for me, and maybe for you too.
  HUGZ