HELP on ChangePassword Control with MembershipProvider!

I have custom CHangePassword Control and when I enter new password into it, the new password goes into the database fine.

 However all password is encrypted in my database as I set up in my MembershipProvider.

Changed password goes into the database not encrypted, and it is causing the changed password not working.

for example if id = man pw= man.. I changed it to id=man pw=woman..

 in the database, i can see pw is woman for id= man, when unchanged passwords for other ids are like "523EB3BD201F" (encrypted)

and when i try to log-in with id=man pw=woman, I cannot login.. older password won't work either.

I don't know where to fix it. Is it the membershipProvider or the changepassword.aspx?

I have set up

<asp:ChangePassword ID="ChangePassword1" runat="server" MembershipProvider="ExtendedMembershipProvider">

where my membershipProvider is ExtendedMemb ...