this was our first sign of trouble...a small patch of peeling paint - when we decided this would be our bedroom - it became the "first upstairs project room"
No doubt when you paint - preparation is the most important step in the process - Never have I had to strip paint from an inside wall - apparently the green is an oil base paint and everything else on top (pink, yellow, cream) is all latex, and the wall never got cleaned or primed before application.
Did you eat paint chips as a kid? (movie reference)
If so this would have been a smorgasbord!
This is the way it comes off - sometimes in big pieces and sometimes little.
So - next time - clean and prime your walls - find out if you are painting over oil base or latex
Read the paint can instructions.
we are hoping this is the only room with this problem - we'll keep ya posted!