Siege 4.2.0 beta 4 has just been released. Exciting!
This version includes a bug fix for SIGSEGV on SIGINT during warning messages. That fix is courtesy dotacow.
Beta 4 also includes a major cookie overhaul that improves cookie handling on a per-thread basis. Namely this fixes or improves the following problems:
You can find a tarball release of beta-4 here.