Who can figure out what this means, and how to get rid of them

I get a lot of lines like these in my server log, I have no idea what they mean or how to get rid of them. I removed all “log” entries from notes.ini

The server was updated today to 8.5 but the same info was on the console before upgrade.

2009-02-03 16:29:00 Router: Successfully issued a request to push to DOMINO01/ZZZ

2009-02-03 16:29:01 Opened session for Domino01/ZZZ (Release 8.5)

2009-02-03 16:29:02 Router: No messages transferred to DOMINO01/ZZZ via Notes

2009-02-03 16:29:05 Router: Successfully issued a request to push to DOMINO01/ZZZ

thanks

Thomas