I have read changelogs of 3.1 on [url]http://blog.jcow.net/2010/08/changelogs-of-310.html.[/url]
I install that, but where is change password. In My account thing like change password.

Account > My Account > Password

Click account from above menu ll take you to My Account page from there click Password Tab and there you can change the password after that click save, and you are done.

In My account there is anything like change password. There is four tabs My information, Avatar,Notification,Privacy.

function cpassword() {
    c('
    <form method="post" name="form1" action="'.url('account/cpasswordpost').'" >

                <p>
                '.label(t('Current Password')).'
                <input type="password" name="password" />
                </p>
                <p>
                '.label(t('New password')).'
                <input type="password" name="password1" />
                </p>
                <p>
                '.label(t('Re-type new password')).'
                <input type="password" name="password2" />
                </p>

                <p>
                <input class="button" type="submit" value="'.t('Save').'" />
                </p>

                </form>');