Hey girls, just thought I would report in as I've been reading your thread to make me feel better! My DS suddenly got terrified of the bath too in April and we've been working through it ever since. Tried bathing with us, with friends, going to play in a dry bath...you name it we tried it! Then we hit on playing with water outside and found he loved it...so what was the problem then??? A bit more observation told me he only had a problem with the getting into the bath bit. He was still scared at this point, but OK once in. I started playing 'hunt the chocolate button' in the bathroom and after several times he was happy to go in the bath and sit down - a big step. Then I concentrated on making it so much fun in there that he doesn't want to get out. Anyway, yesterday when I asked him if he wanted a bath he headed straight up the stairs!!
So anyone else who is going through this right now, there is hope :-)