This bugfix release (0.22R2) is to fix a bug in the 11g password hash checking where the brute force mode for 11g stopped working when the pre-loading was added to the cracker.
A pre-compiled version of worauthbf for Windows is available. The C source code for the latest version is also available.
If you are serious about Oracle security you should run my simple sqlplus script that implements an Oracle password cracker in PL/SQL first and then when you are comfortable with the process move to a binary cracker such as woraauthbf to test passwords to a stronger level.
Thanks Laszlo for your great work on this free program.