YouTube Not Loading

[Anaximander]

Hello,
I have just recently encountered a problem on a MacBook Pro 13-inch (mid 2012) on Mountain Lion, where I cannot access youtube directly from my browser. If I click on it on my bookmarks bar it says:

No data received
Unable to load the webpage because the server sent no data.
Here are some suggestions:
Reload this webpage later.
Error 324 (net::ERR_EMPTY_RESPONSE): The server closed the connection without sending any data.

If I type the URL in my search box, this also happens. What I have to do to access youtube is to type something in my google search that is not a URL, so that when the results come up I can access youtube via my google bar. This is really annoying me and I would like some help. Can anything be done?
I have tried it on Chrome and Safari and it does not work on either. On safari, even if I access youtube through the method stated above, I cannot access my subscriptions, however in Chrome I can.
Also, I have been able to access it without flaws on both my phone and iPad.