identify network problem using ttytter

[e-letter]

Readers,

Ttytter is a command line twitter client
(http://www.floodgap.com/software/ttytter/).

Recently I have started to receive an error which is indicative of a
network access problem, but all other programs using internet access
(mplayer, opera, etc.) are working fine.

How to identify the part of my network configuration that is affecting
ttytter please?

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