Http (lynx, apt-get) fails; ftp ok

[Duncan Sands <sands@topo.math.u-psud.fr>]

For some time now (i.e. even before upgrading to slink), I have been having
problems with http.  Example: when given an address, Lynx reports
that it is unable to connect; apt-get is also unable to connect.  Netscape
works fine though.  I can ftp (for example with apt-get) without problems.
In fact, everything but http works fine.  This is over a PPP connection.
I'm guessing that I did something bad to a configuration file at some point,
but I've no idea what.  Can anyone help me out?

Thanks a lot,

Duncan Sands.

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 Laboratoire de Topologie et Dynamique, Batiment 425,
 Universite de Paris-Sud, 91405 Orsay, France
 sands@topo.math.u-psud.fr
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