im new to this forum website but ive used it before to solve several other problems i tried looking for a fix to my problem but havent achieved anything this time.. so here i am.. now my problem.. so i bought the new 21.5 iMac, late 2012 model, came home worked awesome for a day.. no joke.. a day.... after that i started noticing that some websites wouldnt work and by some i mean about 80 percent of websites aswell as the mac appstore which just never loads,, google works, but when i search something on google and i click a link.. it takes me to the "safari cannot connect to server" white screen, i tried chrome, mozilla, but both give me similar errors. i have tried the DNS changing in the network settings and still nothing... keep in mind that all my OTHER devices such as ipod, sisters ipad, sisters laptop, my windows desktop all work perfectly fine. i have tried resetting safari, and nothing i have tried resetting my router, and nothing. the only thing that seems to work is when i restart the whole mac i get my internet connectivity back on for a couple hours, and then comes the problem again,, i have also tried to delete the cache files in the preference folder, this is getting really annoying considering i havent even had the computer for long. and whats even worse is that my sisters cheap little laptop works perfectly fine when this 1400 dollar computer cant even connect me to the internet... ive seen ppl with this problem i have tried what works for them and still nothing. works for a while then the problem comes up again. i have ALSO tried using a wired connection as well and i get the same problem it works for a while and then the problem comes back... if anyone has any idea of what to do please help me fix this, thanks in advance!