Just upgraded to latest stable and now get:

 

error flush headers to
 

Oct  4 09:43:49 lb1 pound: error flush headers to xx.xx.xx.131: Broken pipe
Oct  4 09:43:50 lb1 pound: error flush headers to xx.xx.xx.131: Broken pipe
Oct  4 09:48:36 lb1 pound: response error read from xx.xx.xx.xx :80: Undefined error: 0