phnuff,
More importantly perhaps..... and I quote from the Ophcrack website :
Ophcrack is a free Windows password cracker based on rainbow tables. It is a very efficient implementation of rainbow tables done by the inventors of the method
You do realise you were lucky you use such insecure passwords, don't you ?
This thing is not a magic tool, it uses rainbow tables.
Google the term. Then review the way in which you generate your passwords, especially if you use the same method for online banking etc.