My mac mini (2011) is only downloading at 100mbps running Mountain Lion, but 200 mbps when running Windows 7 on bootcamp. Why?

I've upgraded my internet to a shaw 250 Mbps plan. Using their speed test I'm getting over 200 Mbps on this mini, running windows 7 on bootcamp.
When running moutain lion, I'm getting exacty 100 mbps. solid, looks like it's being limited.
Network utility app shows link speed of 1Gbit/s zero errors or collisions.
Network is cable modem wired into airport extreme (5th generation), then wired to the mini; all cables cat6.
Is there something in Mountain Lion that limits the ethernet bandwidth to 100 Mbps?
And how do I turn it off so I can get the 200+ the hardware can clearly do?
Thanks

oh, btw.
I get exactly the same max download speed of 100 (102.?) Mbit/s using wireless; which shows as a 450 Mbit/s link speed.
So I seem to have the same limit to all my network connections.

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OS X Lion: About Lion Recovery
Lion Internet Recovery
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Source: Lion Recovery
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Offline Installer for Macbook Air 2011 & Mac Mini 2011

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"does it mean that 10.7.2 is a unified version of the OS X Lion for all mac products?"
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"Therefore, would it be possible to purchase & download the Lion Installer from Mac App Store , extract the InstallESD.dmg and use it as a offline Lion installer for Macbook Air 2011 / Mac mini 2011?"
I don't believe there is a 10.7.2 stand alone installer. 10.7.2 is an update file.

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wish you all have a good day.

Hard to troubleshoot when you can't turn on the computer on any more. One option is to bring it to an Apple store to have them look at it. They will tell you what is wrong and how much it will cost to fix. I have never heard of them charging for a diagnostic and an estimate.
If your CPU was running hot all the time and your fan had small plastic pieaces, in my opinion, something got fried. The mini is so compact, that the excessive heat may have also over heated your hard drive causing thd "ka" sound.
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My mac mini (2011) is only downloading at 100mbps running Mountain Lion, but 200 mbps when running Windows 7 on bootcamp. Why?

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