Got nothing against you...But if you are a VPS provider and don't know what cached ram is, you might need to learn a bit more o.O If you see this line: -/+ buffers/cache: 3813 20251 That is the amount of used and free ram minus
the buffers and cache. So really, the 3813 mb ram is how much is being used. Just wondering, what kind of virtualization software are you ...