When creating a new user account in anaconda (with the F19 nightly from 2013-05-15), the password strength indicator is useless while you are actually typing the password--it simply complains that the passwords do not match. Beyond being annoying, this is inconsistent with the inputs for setting the password for encrypted disks, which updates the strength indicator as the password is typed into the first field.
In F19 final, the password strength indicator bar increases with the complexity of the first password, and the "passwords do not match warning" does not appear until input is started in the second password field.