I have the same problem: I cannot change my password since September 2009 (I try it about once a month and every time - without success).
I already tried to do it in my CP and also using the provided link ( http://www.codeguru.com/profile.php ) - the result is the same.
The last attempt was today... After struggling about an hour I could restore my "old" password (and only after 3-rd or 4th attempt)

Joe and Brad!
How could we solve this problem?