Open MySQL security holes
Oracle's forthcoming version 5.1.47 of MySQL is said to contain several important security patches. The changelog states that the developers have closed three security holes which allow attackers to cause a server crash, obtain unauthorised database access or, in the worst case, inject arbitrary code and execute it on the server. The developers didn't mention which exact versions are affected.
You don't need to be a genius to debug a pf.conf firewall ruleset, you just need the guts to run tcpdump