Ive been having buffer fluctuating problems lately. I have burnt thousands of CD's and DVD's and this is the first time this has happened. I have 5 Lite On burners, LH-20A1S. I burn 5 at a time with Nero 7. My system is fully capable, system specs are: Q6600 @ 3.0, 8 gb ram, 640gb HDD 7200 rpm w/ 32mb cache. I am running windows XP at the moment. All drives are set to DMA. I have defragmented my HDD. I have no heavy programs running in the background. While burning the discs I am only using 0-1% of cpu and500-600mb ram. At 24x it takes about 30-40 minutes to burn. I have tryed only using 3 burners and the same thing happens. I recently cleaned my case and moved drives arround for better airflow. Dont think that should have anything to do with it. The burners finish at different times. Before when everything was fine they all finished at the same time. Dont undestand what the problem is. Please someone help!