I've just apt-get purged Airtime 2.4 from our production machine (Ubuntu 12.04) and installed Airtime 2.5.1. Everything seems fine except that I cannot schedule any repeating shows that use the "Record and Rebroadcast" function. I schedule one-off shows that record but not if they are part of a repeated series. I realised that I didn't purge postsql when I reinstalled Airtime but I'm hoping that's not part of the issue. My gut suggests that something weird relating to the incompatibility with the php versions might be to blame but I don't have the know how to diagnose this.