More and More Websites Unable To Display - IP Service Working FIne

[Garrett1986]

I am wondering if any of you can help me iron out this problem I've been having over the past week or so.

Certain websites I try to access are unable to display. They give me the "standard" cannot connect to the server error.

http://img18.imageshack.us/img18/692/cmcapture1.png

Other computers in the house operating on the same wireless connection can access these sites fine... so I think something is mis-configured on my machine somehow. I contacted my IP and they said everything is fine.

My computer is a 24in. iMac 2.8GHz Intel Core Duo running Mac OS X 10.5.6

 

[ButtUglyJeff]

Does Safari connect, on this particular machine?

 

[Garrett1986]

Does Safari connect, on this particular machine?

Yea... Safari loads most sites fine... but not the ones I'm having trouble connecting to. It gives me the same error as above in Firefox.

My sisters laptop can load these sites fine.