Maybe this helps: there has been a more recent thread on this, it seems that the iOS app is causing these errors for some with quite some regularity (I am seeing this error very regularly too)…annoying but does not seem to have any impact on functionality…if I remember correctly there were some fixes done for this, but the issue keeps reoccuring (I am on milestone build 2.4,0)
EDIT: found one of the other threads: [ERROR] [jersey.server.ServerRuntime$Responder] - An I/O error has occurred while writing a response message entity to the container output stream - #6 by yves