[flubsy]

its very simple.

the dealer announces "check" as players are checking. At what point did you think it necessary to inform the table that you had not checked? After everyone else had checked behind and you had that added information?

Its the players responsibility to follow the action and protect their own action.

Where does this idea that its the dealer's responsibilty to babysit all the players? If the dealer announces that you checked and you didn't, or another player checks behind you out of turn, simply announce, "wait! I haven't acted" immediately.

Simply: If you don't understand the rules, things like this are going to happen, and its not the dealer's fault when it does.