I just saw that two new Mac Exploits have hit the streets. Both are Denial of Service exploits.
The first one is an exploit against vpnd, version Leopard 10.5.0.
The second is against xnu, 10.4, 10.5.1 (i386), and 10.5.1 (ppc).
Both are from digit-labs.org.
And we all know that a DoS is one step away from a remote exploit.