Hi, I'm running PTLE 6.4 with a Digi001 on OS10.3.8. I have plenty of RAM (1.25GB) on a qualified Mac (MDD) and everything's been working fine for a VERY long time. I didn't do any updates or add any new plugs. Suddenly yesterday, on tracks that have plug-ins, when I stop playback, signal begins to rise. It sounds and behaves exactly like feedback. If I take the plug-ins of that channel the feedback disappears on that channel. This happens with digi and non-digi plugs alike. I did every troubleshooting step, including a complete un-install of PT. I also put all of my plug-ins aside so the only plugs I'm using are the ones the PTLE6.4 installer puts there (Digirack) and the problem is still happening. To make sure it wasn't some bizarre routing thing, I changed the inputs on each channel and even tried setting them to "no input". Same thing. I opened sessions that had 2 tracks and no routing and if they had even just a digirack EQ (or any plug-in) they do the feedback thing. Sessions that have no plugs play back fine. Anyone else experienced this? I need Help!!! Thanks in advance! Jack