The old stable versions recommended to me were debian wheezy with airtime 2.5.1. However, I tried to upgrade php to 5.5 on wheezy, but it broke airtime 2.5.1. Also, wheezy is getting old.
What is the latest stable combo recommended? 2.5.2.1 airtime with ubuntu 14.04 or some other method?
Although I can't claim to be an experienced user of Airtime, I've been using Airttime 2.5.1 with Ubuntu 14.04 for almost one year without any major problem.
We have been using Airtime 2.5.1 on Wheezy without problems for a year. Earlier we had dropouts, but we switched to the real-time kernel, and that worked for us.