Dennis Yurichev has released a new password cracker (brute-force) called ops_sse2 for Oracle DES passwords. This password cracker is the fastest brute force cracker for Oracle DES passwords and approx. 3 times faster than woraauthbf from Laszlo Toth.
Here a quick comparision on my Quad2Core (2.4 GHz):
Password length (8 character) (only characters) can be cracked in approx 3 hours. For numbers and characters it takes approx. 2.5 days for a single password.