I've upgraded to Mountain Lion and since then many sites including Google (and all of its related services), facebook and many other sites are not opening. i can't even open gmail.com. the name resolutions seem to be working fine.
; <<>> DiG 9.8.1-P1 <<>> gmail.com ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 24840 ;; flags: qr rd ra; QUERY: 1, ANSWER: 4, AUTHORITY: 0, ADDITIONAL: 0
;; QUESTION SECTION: ;gmail.com. IN A
;; ANSWER SECTION: gmail.com. 300 IN A 22.214.171.124 gmail.com. 300 IN A 126.96.36.199 gmail.com. 300 IN A 188.8.131.52 gmail.com. 300 IN A 184.108.40.206
;; Query time: 262 msec ;; SERVER: 220.127.116.11#53(18.104.22.168) ;; WHEN: Sat Jul 28 11:44:03 2012 ;; MSG SIZE rcvd: 91
In the status bar, it says Waiting for domain. and later it shows errors like EMPTY RESPONSE, TIMED OUT etc.
i even can't open yahoo, twitter. i've tested this from Chrome, Safari, Firefox. But all these sites open from my wife's macbook (snow leopard) that is using same internet connection.
however, i can open many sites including all SE sites, github and many others.
is there anything i can do? as i can't google, i'm literally can't search web too :(.
thanks in advance.