Broken pipe and Transactional update cache is full

In your web applications u can see errors like following:

2012-04-06 10:01:05,031  WARN  [webscripts.connector.RemoteClient] [http-80-1] Exception during close() of HTTP API connection ClientAbortException:  java.net.SocketException: Broken pipe

Solution: In most situations this occurs when your client ajax connection is closed but response is ready. And server can't write response for client. In my case, I used YUI AJAX Get connection and set timeout "5000". When I see this warning message I increase timeout time to "300000" and log tail is happy now :)