Try this link:
http://www.craigslist.org/about/sites.html
Might be a DNS problem - I get the same messages if I type in just the IP address.
Also check if you can PING the site.
Start -> All Programs -> Accessories -> Command Prompt
At the "c:\>" prompt, type ping
www.craigslist.org
You should get back something like this (but with
www.craigslist.org)
Mostly you want to see that you get successful replies.
[localhost] ping en.wikipedia.org
Pinging rr.pmtpa.wikimedia.org [66.230.200.100] with 32 bytes of data:
Reply from 66.230.200.100: bytes=32 time=57ms TTL=44
Reply from 66.230.200.100: bytes=32 time=59ms TTL=44
Reply from 66.230.200.100: bytes=32 time=59ms TTL=44
Reply from 66.230.200.100: bytes=32 time=54ms TTL=44
Ping statistics for 66.230.200.100:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 54ms, Maximum = 59ms, Average = 57ms