Cannot load certain websites in Firefox

I am running OS X 10.6.5 and using Firefox 3.6.13. When I try to access some websites, such as eHow | How To Do Just About Everything! | How To Videos & Articles, Firefox will not load them. eHow loads perfectly fine in Firefox 3.6.13 on my Windows-based (XP SP3) PC, so I am guessing this has to do with Mac.

Could someone please help me? Thank you in advance for any help.

Loads nice and fast for me with same Firefox. Not a site you have accidentally prohibited access to and cookies enabled?

harryb2448 said:

Loads nice and fast for me with same Firefox. Not a site you have accidentally prohibited access to and cookies enabled?

Click to expand...

How would I have prohibited access? I cannot remember doing anything like that.

This is strange. It loads perfectly fine on the Windows, but not here.

I found the solution. Peer Guardian was the problem, so I uninstalled it. I hope this has helped someone.

Well PG is a utility for prohibiting access to web sites as suggested.

One of those things that should not be used unless you know precisely what it does and how it works.