Icinga Core 1.6.0 introduced a change on the freshness checks for passive check result and actually this lead into an unwanted bug as well as behaviour. Sorry for the inconvenience this caused for those actually having upgraded and experienced that bug. Thanks to Jörg Linge for finding the bug and all the others reporting feedback and testing the proposed fix!
Further analysis and thoughts are put into #2136, feel free to add yours too. And remember – we do need more (beta) testers to prevent such bugs in the first place! Drop us a line if you can share a test platform :-)
Icinga 1.6.1 tarball is now available for download. Packagers are already informed and will release their updates soon.