This one bothered me more than once:
I change a user setting. When I click OK it reminds me to 'retype' the password. When I do and hit the submit button again I see no changes.
What happened is this.When the page is refreshed to remind me of entering the password it didn't remember the setting I just changed.
I would suggest this be fixed. Or at least there should be a reminder to not only enter the password but also to redo the change. Perhaps you could do the validation before the user page is entered or rely on the cookie.

Have a nice day