I use Ubuntu 11.04 64bit on a notebook with 4gb of ram. The problem is that I seem to use only 1.8 of 4 gb.
the output of ~$ free -m is
total used free shared buffers cached
Mem: 1852 1678 173 0 144 802
-/+ buffers/cache: 731 1120
Swap: 5960 0 5960
any help please?
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