Yep, I'm hearing you...my DS is the same...he's gone nuts almost 'overnight'...but while he's very naughty with some things (ie mini-tanties when something doesn't go his way, throwing stuff, pushing other kids (ARGH!), helping himself to biccies etc) he has also had some good changes (ie getting into the car seat alone, lifting his bum up when I change his nappy etc). I guess it's just the 'terrible twos' that you hear about but hopefully it won't last too long!?!?!?