Mac Mini drops WIRED internet connection

Hi Folks,
I have a Mac Mini that keeps dropping it's internet connection every couple of hours. I have tried a couple of different routers and am now using the airport extreme N router which I purchased a couple of days ago but to no avail. Other computers on my network stay connected without any issues, its only the mac mini that keeps doing this and not in any particular pattern. This is with a WIRED connection to the router. When I use the wireless its even more erratic. I listen to music using an airport express that is also connected via ethernet to the Airport extreme but obviously when that keeps cutting in and out.
Was hoping people might have some suggestions here.
Thanks!

Copy down the network address settings when things are ok, then recheck the settings when you have the problem. This will show if your loosing your ip addressing. When you have the problem, try to ping the address of the other computers. If you get a response, this will tell you if the problem is local or connectivity to the internet. (Go to Utilities>Terminal then ping xxx.xxxx.xxxx.xxxx)

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Hey out there.
I know this topic has been covered, however i could not find a solution that works for me.
Last week I bought a intel mac-mini and got home and happily connected it to my wireless router (this all went fine)
I am using a Asus wl500g router.
However, once i updated all the software via the wirless and moved my router closer to my mac-mini.( i am using a 1 meter Cable) it tell's me that my etherent cable is not connected.
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After messing with the setting on my ethernet connection i disabled IP ver 6 and did a renew and all of sudden i had wired ethernet connection.
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Great, however after another reboot, i have not been able to get connection again or since. this has been for a few days now.
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The cables are the right length.
The cabels work!
it should have nothing to do with the fact that my router is 100baseT cause my nas connects to it just fine which as i said also has two gigibit ports.
THe issue is on the mac side that is forsure!
I took my mac back to the store where i bought it and they tested it and they said that is fine, they must be connecting to some airport.
So, could some please tell me what i need to do to get a constant connection between my mac-mini and my router please.
there must be a way of getting it work as it works on and off at random times.
I have been a happy mac user for a few years, so this kind of issue is really puzzling, why does it not just work like most other things MAC?
Buying a airpot extreme is not an option in my books, as the rest of the my mac network functions just fine on my current router.
Looking forward to some inlightenment.
thanks
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I am having exactly the same problems you are. Everything worked fine for a few months and now I copy you problem identically. Again, the shop in Frankfurt says everything works fine. All my other PCs and cables work.
I have been quietly going around the bend. Every now and again I have a connection for a short while and then it is gone. "Kabel nicht verbunden".
This tends to suggest that the problem lies either in the OS or the hardware, nothing external. Surely someone at Apple must be aware that there is an issue? The time I have wasted on this issue more than covers the cost of buying a new pc. Unless someone has any bright ideas, that is what I shall end up doing and send Apple the macmini back.
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Thanks,
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Mac Mini drops WIRED internet connection

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