[rtmpdump] Librtmp connection problem

ERROR: RTMP_HashSWF: connection lost while downloading swfurl http://svtplay.se/flash/svtplayer-2011.13.swf ERROR: Problem accessing the DNS. (addr: fl11.c91005.cdn.qbrick.com) from librtmp. Rtmpdump.exe works as expected on the same URL, but in my program

Hi! I'm using librtmp in a project of mine. In Linux everything works just fine. When i compile (with QT Creator and mingw) and run my program in Windows however I get: librtmp doesn't seem to connect at all. Is it a problem with socket library? I'm totally lost here, don't know where to start. Jacques