total       used       free     shared    buffers     cached
  Mem:       2042520    1816496     226024          0     294344     486908
  -/+ buffers/cache:    1035244    1007276
  Swap:      4194300       8172    4186128

I don't know what you are using to view your memory usage, but any decent tool should give you at least the information that `free` does (see above).