HTTP JVM: com.ibm.xsp.acl.RedirectSignal - What does it imply?

After upgrading the Domino server to 8.5.2, we've occasionally been getting entries like these in log.nsf on the server:

04.10.2010 14:07:39 HTTP JVM: com.ibm.xsp.acl.RedirectSignal
04.10.2010 14:07:50 HTTP JVM: com.ibm.xsp.acl.RedirectSignal
04.10.2010 14:09:08 HTTP JVM: com.ibm.xsp.acl.RedirectSignal

I've been trying to ask Google for help on this, but without any luck. In fact, if you google the phrase "com.ibm.xsp.acl.RedirectSignal", you get a single hit (!): http://www.timtripcony.com/xpages_ext_api_javadoc/serialized-form.html

Does anyone of you Lotus Notes experts out there have some more info on this topic?

Might not be a big problem, but I'm a bit paranoid when it comes to entries in the log.nsf... :-)


Update: I've also created a topic at the Notes 8.5 forum over at lotus.com - LINK