Problem MAC DNS problem

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Hi All,

I will like to ask you for advice, as don't have much/any experience in Apple Mac's.
So MAX OS version is 10.6.5, Safari Version 5.0.3

Problem is, laptop is connected to Wi-Fi router through Airport, Skype is working fine, but browsing website is almost impossible. Most of the time showing Time-Out, or server couldn't find website.
IP conf is correct; laptop has internet connectivity, but have problems while browsing websites.
This seems to be known problem, with solution on apple website. All answers pointing to DNS, and reconfiguring it, or using default gateway as such.

Unfortunately, providing different DNS addresses doesn't fix problem. While typing IP address into browser, is opening it within acceptable time [no DNS service needed], typing same address but using name, problem persist.

Were trying using different DNS addresses, but with no help.

Anyone could suggest any reason for that happening? Looks like DNS problem, but putting different, does not fix the problem at all. Moving laptop around house/next to the router makes no change.
As well, can't test Laptop on network cable till probably tomorrow.

Thanks for any tips

 

thanks, will have read there.

didn't try with FF, but did try with Chrome, and same issue.