strange Errno::ECONNREFUSED, but works fine in Rails console

[Xin]

I get this very strange connection refused error when run normally:

! CONNECT TO :0
Exception `Errno::ECONNREFUSED' at /usr/lib/ruby/gems/1.8/gems/
httpclient-2.1.2/lib/httpclient.rb:1497 - Connection refused -
connect(2)
Exception `Errno::ECONNREFUSED' at /usr/lib/ruby/gems/1.8/gems/
httpclient-2.1.2/lib/httpclient.rb:1506 - Connection refused -
connect(2) (://:0)
Exception `Errno::ECONNREFUSED' at /usr/lib/ruby/gems/1.8/gems/
httpclient-2.1.2/lib/httpclient.rb:935 - Connection refused -
connect(2) (://:0)
Exception `Errno::ECONNREFUSED' at /usr/lib/ruby/1.8/soap/
streamHandler.rb:252 - Connection refused - connect(2) (://:0)
/usr/lib/ruby/gems/1.8/gems/httpclient-2.1.2/lib/httpclient.rb:1497:in
`initialize': Connection refused - connect(2) (://:0)
(Errno::ECONNREFUSED)
from /usr/lib/ruby/gems/1.8/gems/httpclient-2.1.2/lib/httpclient.rb:
1497:in `new'
from /usr/lib/ruby/gems/1.8/gems/httpclient-2.1.2/lib/httpclient.rb:
1497:in `create_socket'
from /usr/lib/ruby/gems/1.8/gems/httpclient-2.1.2/lib/httpclient.rb:
1455:in `connect'
from /usr/lib/ruby/1.8/timeout.rb:56:in `timeout'
from /usr/lib/ruby/1.8/timeout.rb:76:in `timeout'
from /usr/lib/ruby/gems/1.8/gems/httpclient-2.1.2/lib/httpclient.rb:
1454:in `connect'
from /usr/lib/ruby/gems/1.8/gems/httpclient-2.1.2/lib/httpclient.rb:
1311:in `query'
from /usr/lib/ruby/gems/1.8/gems/httpclient-2.1.2/lib/httpclient.rb:
932:in `query'
... 12 levels...
from /home/xin/apps/goldminer1.5/vendor/plugins/amazon_ecs/lib/
AWSECommerceServiceClient.rb:150:in `retrieve_items'
from /home/xin/apps/goldminer1.5/vendor/plugins/amazon_ecs/lib/
AWSECommerceServiceClient.rb:149:in `each'
from /home/xin/apps/goldminer1.5/vendor/plugins/amazon_ecs/lib/
AWSECommerceServiceClient.rb:149:in `retrieve_items'
from lib/jobs/fetch_amazon_items.rb:14


But when I run the same method in Rails console, everything is fine. I
am desperately trying to debug this.

Can anyone help at all?

Xin