Loaded up my Pinnacle Studio 9 last night and downloaded the latest upgrades and patches. All was working well during the early part of editing but I found that the more video I added the worse Studio performed (especially on playback). The most notable thing that happened on playback was that the Transistions do not operate properly and sometimes do not appear at all causing the video to jerk and skip to the next scene. I did all my system checks (DMA on HDD, close all background progs, defrag HDD etc..) but it didn't improve. So I saved my project and switched off for the night hoping that maybe the heat inside my PC was causing my system to under perform. Switched on this morning. Same probs. I bet, from reading other reviews, there is someone out there who has experienced the same problem. If so, did you get round this problem and how? I'm not totally convienced that what I'm experiencing is totally down to the software but then I'm not a PC expert and wouldn't know for sure. My main worry is that when I eventually go to burn my DVD that i will get exactly what I see on the playback. Any advice would be appreciated.