If you're a packet monkey like me, you probably use tools like Argus and Tcpreplay.
Carter Bullard is preparing to release Argus 3.0 soon, which includes a lot of community feedback. You can try the latest release candidates here. I helped testing by providing access to a box running FreeBSD 6.1 amd64.
Similarly, Aaron Turner just released a new beta version of Tcpreplay. I ran into a problem with Tcpedit on FreeBSD 6.1 i386 when running 'make'.
Try downloading and testing these beta versions and provide feedback to the authors. Thank you!