http://developers.de/blogs/andreas_erben/archive/2008/06/11/don-t-cache-your-device-connection-in-an-eventhandler-eine-device-connection-sollte-man-nicht-in-einem-eventhandler-cachen.aspx(German version below / deutsche Version weiter unten) A while ago I talked to someone who knows BizTalk RFID inside out about that sometimes it just takes too long to open a connection to a device in an EventHandler. The advice I received was, why notenCommunityServer 2008 SP1 (Build: 30619.63)