When we use multiple groups (or even groups that extend the default), we've found that the getters for collections with the @Valid annotation are executed multiple times. Haven't spent time to figure out why that is exactly since the results of the validation are correct, but seems as though it's a bug.

actually it sounds more like a virus...be careful

actually...it would be nice to have @Valid groups too.

i can see arguments for otherwise, but i think it would be something nice to have.