Premiere Pro playback problem - solved!

If any of you have had problems playing back video in Premiere Pro on OSX then you're likely to have fallen foul to the same issue as we had. Playback either stutters badly or stops after a second or two of playback. This can occur when you run incremental updates or big updates (from CS4 to CS5 for instance) but is easily fixed.
Here is a link to the Adobe support site but I'd add a little extra if I may - make sure you login as a root user before deleting the required preference.

http://kb2.adobe.com/cps/842/cpsid_84287.html

Also I suggest that you open Premiere while still logged in as root to make sure a nice fresh preference takes its place. Close Premiere then and go back to your normal user login account and all should be fine!

I did notice that on a fresh install we didn't actually have the troublesome preference (com.apple.audio.AggregateDevices.plist) until we open Premiere while logged in as root so thats something to be aware of too.

RESULT - not only do we have the best trainers but also the best support!