Today we have pushed to the master branch a new version that should help A LOT with the freezing problems and bad communications you may have experienced in some scenarios (like long distance/ unstable connections).
We encourage all of you to try it
Please notice that we are not using the installed via apt-get libsrtp in ubuntu so please uninstall it (or make sure that is not the one lynckia is linking against) and run the installErizo script or compile yourself the one we included in the repository. Sorry for the inconvenience but we had to do a minor adjustment in order for this new version to work.
Furthermore, we have moved our demo machine (chotis2.dit.upm.es) to 64 bits ubuntu. Hopefully we will detect 64 bits problems earlier.