I installed a fresh copy of Ubuntu 14.04 & Windows 8.1 just Yesterday. Now in Windows 8 There is a pecular problem. Whenever i interact with any object on the screen, the computer freezes, for about 30-40 secs. This happens almost all the time say 5-6 times in 10 minutes. The reason behind this was that DISK ACTIVE TIME which is shown by Task Manager spikes up to 100% & stays there for about a minute or so. But in Ubuntu, none of these things happen I can use Ubuntu Lag free comfortably The same thing used to happen with my previous Drive, so i got it replaced from WD, but even after replacing same issue still persists. Pls someone help. My System Config : AMD Phenom X6 1055T 2.8GHz Gigabyte 880GM-UD2h Kingston 4GB DDR3 HyperX WD Black 1TB