37. Having more than one connection to the same host when doing NTLM

37. Having more than one connection to the same host when doing NTLM
  authentication (with performs multiple "passes" and authenticates a
  connection rather than a HTTP request), and particularly when using the
  multi interface, there's a risk that libcurl will re-use a wrong connection
  when doing the different passes in the NTLM negotiation and thus fail to
  negotiate (in seemingly mysterious ways).

36. --limit-rate (CURLOPT_MAX_SEND_SPEED_LARGE and
  CURLOPT_MAX_RECV_SPEED_LARGE) are broken on Windows (since 7.16.0, but
  that's when they were introduced as previous to that the limiting logic was
  made in the application only and not in the library). This problem is easily
  repeated and it takes a Windows person to fire up his/hers debugger in order
  to fix. http://curl.haxx.se/bug/view.cgi?id=1603712