Gajim creates accounts with blank password.
When creating a new account, if the "save password" box is _un_ticked, the account is actually created with a blank password.
- Workaround(1): Make sure the password box is ticked when you create the account, then untick it later.
- Workaround(2): If you wish to prevent your password from ever touching the disk plates, untick the box, then log into your account with no password, and change it.
Note: Not sure if this bug happens with every server, but it has been confirmed on jabber.cc and jabber.ru.