[Dovecot] Password Problems

I have a user that has a password that has {} in it (left and right curly brackets). Under earlier versions of dovecot (less than v1) there weren't any problems with it. Now that we've upgraded to v1, his password no longer work. The short term solution is for him to change his password, which he has. Has anyone else seen this same problem? It seems to pop up more when using webmail apps such as Squirrelmail or Uebiumaiu.

Thanks!