Hi, I minor note in SCTP for those with special interests. The SCTP on Windows is working, thought the current performance is only ca 30,000 messages per sec on my old laptop. The driver performs stable under normal operations, but 100% CPU load over time will expose a snag that the author currently are working to sort out. I have tested on Windows XP Professional with an ordinary laptop. The stack failed to install on Windows Vista 32 bit. For all practical purposes the stack is sufficient for my development work, but I will not recommend using in production yet. I have not tested the alternative which is www.sctp.de , but would like to hear from anyone that has experience of this. If anyone is interested in this work let me know. Jan