assert() crasher in circuitlist.c:414

[Joe Magic]

Hello dear developers and users,

lately we where able to reproduce a crasher bug on a
windows xp system. as that happened a few times we
truned on the debug-mode before.

[notice] Tor 0.0.9pre2 opening new log file.
...
[warn] Stream is 15 secondslate. Retrying.
[warn] circ (length: 3, exit random): solid(open)
err(open) random(open)
[warn] No Tor server exists that allows exit to
xxx.xxx.xxx.xxx:4662. Rejecting. (please note that I
replaced the ip-address with xxx)
[err] D:\\Documents and Settings\\someone\\My
Documents\\tor\\src\\or\\circuitlist.c:414: ???: Assertion 
0 failed; aborting.