Websites not working on os x 10.8 Mountain lion

[rchap]

Hi,

A while back I had upgraded to 10.8 from 10.7, and many websites don't load on my laptop. On safari and firefox, when I try to open a site up like youtube, all I see is a blank screen. But on chrome it has an error message.I have never had this error with 10.7. Any help would be appreciated

PS
I don't know much about computer/mac stuff, i.e. how work keychain access, so I would appreciate it if you could give step by step instructions. Thanks.

 

[MacForScience]

What error does Chrome give you?

Cheers

 

[rchap]

Error 324 (net::ERR_EMPTY_RESPONSE): The server closed the connection without sending any data.

 

[MacForScience]

Can you ping a known website like Google?

In the Terminal type:
ping -c 3 www.google.com
Press Return

You should get:
3 packets transmitted, 3 packets received, 0.0% packet loss
If you don't, then the issue may also have to do with not being online.

When was the last time you cleared your browser cookies and caches?

Cheers

 

[rchap]

Yeah i got ping: "invalid count of packets to transmit: `3www.google.com'"
i just cleared the cache and cookies recently, afterwards part of one of the sites that i couldn't access before works, but other parts of it wouldn't load.

The funny thing is that I tried to access one of the sites on the administrators account and from what it seemed, the home page of the site I was trying to access worked just fine. But then as I go back to my guest user account, all I get is a blank screen.

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actually right after I posted the last reply, I entered ping -c3 google.com into terminal, and the 3 packets transmitted, 3 packets received, 0.0% packet loss showed up