from wikipedia

Passive-aggressive behavior refers to passive, sometimes obstructionist resistance to following authoritative instructions in interpersonal or occupational situations. It can manifest itself as resentment, stubbornness, procrastination, sullenness, or repeated failure to accomplish requested tasks for which one is assumed, often explicitly, to be responsible. It is a defense mechanism and, more often than not, only partly conscious.

more information and tips of how to deal with it from: http://www.coping.org/anger/passive.htm

its good to finally realise that there is a name to what i feel most of the time… stumbled upon this term in a book i just got yesterday…