[wubi] Why my System Became Slow

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http://ubuntuforums.org – hey guys I installed ubuntu through wubi I allocated 20GB Space for the Ubuntu. But when i started the system. Ubuntu became very slow. If i opened application little rapidly the system is getting struck The Configuration of the System is 250GB HDD 1GB RAM INTEL DUAL CORE PROCESSOR. I Installed both Windows and Ubuntu in Same Drive. What could be the problem? :confused::confused::confused: (Hardware)