I am new to Linux, been using Xubuntu 12.10 installed via wubi.exe only for few days now. I am sure this is a rly nooby question, but look at the picture. The task manager says my RAM is used for 8% while the top command in terminal is saying it is about 1,9gigs which is almost 50% of my 4gig Ram. Can anyone explain this to me? 50% is way to high, screen is taken after a fresh reboot. It this somehow related to the memory lock? Everytime i start Ardour i get a message saying my memory is locked.. Thanks.