Echo Issues

I am at a bit of a loss with our phone system. The system has been up for about a month now and we have been very impressed with the call quality and the stability of the system. Everything was working great until about 2 days ago when i installed some updates on our linux system, including some updates for asterisk and freepbx, and then rebooted. Since that time there has been an extremely annoying echo problem on all of our phone calls. It doesnt seem to affect the call if we call eachother internally, but everything else echoes. We are using the digium analog card with the echo cancellation module. Since the echo problem began i have checked the configuration of the module and everything seems to be the same, but something is definitely wrong. Any ideas as to what could be causing the echo now? Thanks

You should probably be using Digium’s commercial support.