Sounds like (i'm nearly certain) an issue with your router OR Intenet connection.
Can you check the 'Console' to see if you are getting time outs with your wireless connection?
Do you ever notice the little wireless connection drops (the signal bars near the clock on the top left of the screen?
Finally does this happen on other PC's/iPods/devices on the wireless network?
Can you try connecting to your router with an ethernet cable and see if the problem persists? (to rule out your ISP being the issue)
I know there have been threads in the past with basically the same issue.
Might want to look at those, and try changing your DNS server, Google, OpenDNS, etc. I would make changes in router rather than software.
etworking for Snow Leopard.
Router and firmware up to date is one thing sometimes overlooked.
Whether you use wired or wireless, and anything else that would be pertinent.
Check this on slow wireless
This is a DNS failure / timeout, not specific to the browsers. This may occur if your ISP's DNS server is particularly busy, or if you have a router between you and your ISP that's caching DNS and has a bug (I have an ActionTec FiOS router provided by Verizon that goes awry about once every six months requiring that it be restarted).
The easiest thing to do is to go to the Network preferences, click on "Advanced" and then the DNS tab. Click the "+" button under the box labeled DNS servers and add the following OpenDNS.com:
Try the suggestions first, and see if they make a difference.
In some cases a new modem or router is the best avenue, sometimes firmware update to the device. Ive done both, my old Netgear modem couldn't handle 15MB and no longer provided firmware udates.
It is a device, it has firmware and software and follows rules and protocol. A device might have worked on a PPC Mac, or on XP, and not properly with Windows Vista or 7 or latest OS.
+Only google and a few others know just how the spagetti string network traffic flows.+
I've the same problem but change in DNS doesn't solved the problem.
I've tried on the same network with another computer and it's work fine.
I cannot access twitter.com and I don't understand why?
Another Macbook pro can access the website on the same network.
Safari, Firefox, Chrome, Opera no browser can access the website.
With Twitter API I've message error Error loading tweets -1004.
if someone can help me I'll appreciate.
It seams to be a flash player issue (typical flash) I just installed the new beta release ( http://download.cnet.com/Adobe-Flash-Player-Beta/3000-2378_4-75289579.html ) and restarted my mac and twitter came alive!