I've been using Ubuntu on my system for over a year now, dual boot with windows xp. So far I've just used it as a 'fun' operating system, to surf the web, try out new things such as Beryl etc etc. But when I decided to give it a go as a full fledged OS, i've noticed that the OS runs much slower as opposed to running windows. If I open an OpenOffice document, it takes much longer to open as compared to Office 2007. Saving documents, closing and opening applications such as VLC etc take much longer. And there's a considerable system 'lag' while working in Ubuntu. Take for example when I run the System Update, as its installing or updating software, I can't do anything else properly. The mouse lags, the speed of the computer reduces drastically. But if I'm running windows update, I can just minimize it and continue with my work. Another issue i've found is with multitasking. Say I've got Rhythmbox, Firefox & OpenOffice running. The moment I switch from OpenOffice to Firefox, the system lags again, and it takes a while to make the switch. Anyone else facing similar problems? And how can I improve the performance of the system?