Hi all I've replaced a failed IDE drive with a SATA and notice that at least two applications are taking much longer than before. My uninformed guess is that the data buss is not properly configured The previous set-up was Primary Master 80GB IDE (XP boot) Primary Slave 160GB IDE (failed) Secondary Master DVD IDE 320GB USB external 1TB USB external New set-up is Primary Slave 80GB IDE (XP boot) Secondary Master DVD IDE 3rd Master 500GB SATA 320GB USB external 1TB USB external For the time-being I preferred to keep the 80GB as the boot drive so I don't need to spend time re-installing the hardware, and Desktop is still the same etc Two instances of slowing down - Writing a DVD data disk. It used to take around 15 mins @ 8x, now it takes 80 mins and CPU useage is almost 100%. Even the mouse pointer moves jerkily. Verification is down to 1.2x, it used to be > 8x Processing a video from avi to rmvb with Real Producer. Time was generally about 1.5x file duration, eg 30 min clip would take 45 min. Now it would be almost 2 hours In both cases, particularly video processing, I note that as the conversion progresses it gets slower and slower, as if there's some increasing bottlenecking. I've not found a source-destination drive combination that's noticeably faster. Perhaps whatever I chose has to go through some common point which is the problem Inter-drive (any source-destination) copying seems reasonably fast though It's a dual-processor mobo and I think that now one of the two processors is shouldering almost all of the burden, as seen in Task Manager. I'm pretty sure that previously the sharing was 80:20, but now it's 100:0 Any assistance would be appreciated TIA Joe * * ********** Quality PIC programmers http://www.embedinc.com/products/index.htm --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .