well, i'm glad it isnt just mine! :x
with my 4 yr old, i used them, yet dont ever remember them leaking.

when i changes the teat size to 3m for Issy, they started leaking! i have found that as i put the water in, then leave til i am ready to use , when i have put the powder in i just readjust the teat again before shaking. :lol:
very occasionally it may still leak, so i just rethread again, and then they are fine. :\)
[Modified by: ollier2001 on July 24, 2008 01:44 PM]