Hello, Daniel.

Here is the test program that crashes on last CVS version.
With lib-curl 7.15.5 it works OK.

As I understand the problem is with multi->closure list.
In this test each call of curl_multi_remove_handle adds same easy
handle to the closure list. As a result of it curl_multi_cleanup
tries to close this easy handle twice. And it causes access to already
freed memory.

-- 
Best regards,
Dmitriy Sergeyev
C++ Developer of
ISS Art, Ltd., Omsk, Russia.
http://issart.com
http://issart.com/index/Portfolio/cpp&lang=eng
mailto:dsergeyev_at_issart.com