I built Tor from the latest stable ports tree and it starts with a warning about libevent, runs for a while, and crashes.
Apr 23 04:03:33.925 [notice] Tor v0.2.2.39 (git-bec76476efb71549). This is experimental software. Do not rely on it for strong anonymity. (Running on OpenBSD amd64) Apr 23 04:03:33.970 [warn] It's a little hard to tell, but you seem to have Libevent 1.4.0-beta header files, whereas you have linked against Libevent 1.4.14b-stable. This will probably make Tor crash. Apr 23 04:03:33.973 [notice] Initialized libevent version 1.4.14b-stable using method kqueue. Good. Apr 23 04:03:33.975 [notice] Opening Socks listener on 127.0.0.1:9050 As far as I know it should have built properly, there might be a problem with libevent. I can only seem to find a port for libevent2 though, so maybe there is a problem with my base system. -- www.johntate.org