OSX connection issue

[J3sUsD]

My internet connection is fine and super fast the problem is for some reason my 13 inch Macbook Pro running 10.6.5 won't connect to certain websites like cracked.com or squarespace.com. The Windows PC's running XP, Vista, and Windows 7 on my wireless network have no problems connecting to these websites any ideas why my Mac is the only computer that can't?

 

[finnschi]

weird DNS settings?

Try to Ping those websites start terminal and type in "ping www.xy.com"

 

[J3sUsD]

I tried to Ping it and I would get this
"Request timeout for icmp_seq xxx"

Those "xxx" numbers would change every few lines.