The following things have changed since 2.1.2: * If a backend process sends a response that doesn’t contain a “Status” header, then Phusion Passenger will crash. This problem is caused by a small typo, and has been fixed. * Fixed permission problems which prevents file uploads from working properly when PassengerUserSwitching is turned off. * Fixed a Rake-related problem on Ruby 1.9. * The gem is now Ruby 1.9-compatible as well, so if you type “gem install passenger” on Ruby 1.9 then it will work. * Fixed compilation problems on Linux-Sparc. * Fixed compilation problems on NetBSD. Patch contributed by yui.naruse. * Fixed compilation problems on AIX. Patch contributed by pedzsan. * Fixed “bad file descriptor” problems on x86_64 OS X and ppc64 OS X. * Fixed a few problems in the dependency detection part of the installer. * Minor improvements in fatal error handling. * Documentation improvements. * Minor usability improvements in the error pages.