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I use top command and CPU used 10~20% when the system is idle.

But when I open XBMC, the CPU usage is up to 60~70%, even without doing anything (no movie, no music).

Is it a Xorg bug or 12.04?

PC Specs: Intel P7450 2.13Ghz x 2. 4G 1066mhz

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closed as not a real question by Uri Herrera, Takkat, Tom Brossman, Jorge Castro, fossfreedom Oct 5 '12 at 8:38

It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, see the FAQ.

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