Hi,
 
	since updating to 4.1.7, I get occasional error messages sent to my syslog daemon like these:
 
Core::Scgi::Session: system failed [0xcffd03ee], unexpected error code: 0xcffd016a.
Core::Scgi::Session: system failed [0xcffd016a], failed to send a source file. 
	What is causing these, and do I need to worry?
 
	Thanks, 
	Christian