Mac Mini Internet Connection Issues

In recent weeks the success of my Mac Mini being able to access the Internet and my home network is abissmal.
I have intermittant forced access at best, I have power cycled my router and modem from Time Warner. I have tested both WIFI and Eithernet to no avail
When I use the diagnostics it shows it is not connected, then it will repair connect and when I switch a page in my browser or go to use Skype, BOOM lost connection. This is occuring on both WI FI and Ethernet.
I have read in MAC Forums and on Google that other's have had similar issue.
Info I can add
LinkSys Wireless G router
Also have a WII console an iPhone and Android phone and MacBookPro sharing this connection.
It is nly in the last few weeks it has presented any troubles. I have done a spyware/malware virus check bought MacKeeper cleaned up all files. Short fo taking it in for service (I have only had it since early December)
Is in a router DNS issue, a MAC Mini Issue, a network issue. I am thinking I should have saved more cash and got an iMac.
Thanks

Have you tried changing channels on your Router?
Open Keychain Access in Utilities, use Keychain First Aid under the Keychain Menu item, then either check the Password under that item, change it, or delete it and start over.
Make a New Location, Using network locations in Mac OS X ...
http://support.apple.com/kb/HT2712
http://docs.info.apple.com/article.html?artnum=106653
The Interface that connects to the Internet, needs to be drug to the top of System Preferences>Network>Show:>Network Port Configurations and checked ON.
10.5.x/10.6.x/10.7.x instructions...
System Preferences>Network, click on the little gear at the bottom next to the + & - icons, (unlock lock first if locked), choose Set Service Order.
The interface that connects to the Internet should be dragged to the top of the list.
Try putting these numbers in Network>TCP/IP>DNS Servers, for the Interface you connect with...
208.67.222.222
208.67.220.220
Then Apply. For 10.5/10.6 Network, highlight Interface>Advanced button>DNS tab>little + icon.
Might add the IP of your Router to DNS also.

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Message was edited by: Numenorean

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Hello AnaB4,
Welcome to the HP Support Forums!
I see that you are getting a message to connect to server to update ink levels when printing with the 8620. This has been an issue since the weekend, server problems have been noted as the cause. The only resolution I know of at this time is to follow the steps here: Re: How do I correct the date on my HP Envy 4500?, or keep hitting OK.
Cheers!
JERENDS
I work on behalf of HP
Please click “Accept as Solution” if you feel my post solved your issue, it will help others find the solution.
Click the “Kudos Thumbs Up" to the left of the reply button to say “Thanks” for helping!

Mac Mini Internet Connection Issues

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