Tor crashes

[alexyz@xxxxxxxxxx]

I had been running Tor server quite succesfully until I had to fully reformat my HD due to a
hack breach. After reinstalling OS and apps I can´t get Tor to run for more than an hour
before it crashes. Tried versions 0105, 0103 and 0099. Below are the most significant
messages: (libevent poll with win32 failed and poll failed)

I suspect misconfiguration on my system but I don´t know where to start looking.Pointers?
tks

Tor0105
May 13 12:34:22.921 [notice] circuit_send_next_onion_skin(): Tor has successfully opened
a circuit. Looks like it's working.
May 13 12:35:31.687 [notice] router_dirport_found_reachable(): Your DirPort is reachable
from the outside. Excellent.
May 13 12:54:20.406 [err] do_main_loop(): libevent poll with win32 failed: No such file or
directory [2]

Tor0103
May 13 15:28:50.546 [notice] tor_init(): Tor v0.1.0.3-rc. This is experimental software. Do
not rely on it for strong anonymity.
May 13 15:28:50.562 [notice] options_act(): Initialized libevent version 1.0b using method
win32
May 13 15:29:27.625 [notice] circuit_send_next_onion_skin(): Tor has successfully opened
a circuit. Looks like it's working.
May 13 15:29:27.625 [notice] circuit_send_next_onion_skin(): Now checking whether
ORPort and DirPort are reachable... (this may take several minutes)
May 13 15:32:13.453 [notice] router_orport_found_reachable(): Your ORPort is reachable
from the outside. Excellent. Publishing server descriptor.
May 13 15:43:14.593 [notice] router_dirport_found_reachable(): Your DirPort is reachable
from the outside. Excellent.
May 13 16:01:02.718 [notice] cull_wedged_cpuworkers(): Bug: closing wedged cpuworker.
Can somebody find the bug?
May 13 16:32:14.031 [err] do_main_loop(): libevent poll with win32 failed: No such file or
directory [2]

Tor0099
May 13 16:51:43.171 [notice] tor_init(): Tor v0.0.9.9. This is experimental software. Do not
rely on it for strong anonymity.
May 13 16:52:08.875 [notice] circuit_send_next_onion_skin(): Tor has successfully opened
a circuit. Looks like it's working.
May 13 16:58:41.750 [warn] connection_about_to_close_connection(): Harmless bug: Edge
connection (marked at main.c:278)hasn't sent end yet?
May 13 17:07:58.343 [err] do_main_loop(): poll failed: No buffer space available
[WSAENOBUFS ] [10055]