Set it to a single connection and watch it. You clearly have multiple connections and one or more is failing to connect. Log messages intermix when you have multiple connections. You can't really tell which connect is which from these logs. I think it looks like a connection failed and then newsbin tried again and it worked the second time.
[20:51:35] ERROR InterSocket - SSL Connection Failed:0
[20:51:35] ERROR InterSocket - Error: SSL Negotiation Failed, Host: news.usenetserver.com Error Code: 0
Has nothing to do with compressed headers. It's happening before a connection is even really established. If they want to post here or email. I'll work with them.
20:51:35]
HIGH InterSocket - SSL Zlib Compression Added
[20:51:35] ERROR InterSocket - SSL Connection Failed:0
[20:51:35] ERROR InterSocket - Error: SSL Negotiation Failed, Host: news.usenetserver.com Error Code: 0
[20:51:37] HIGH InterSocket - SSL Zlib Compression Added
[20:51:37] HIGH InterSocket - SSL Zlib Compression Added
This shows 3 connections making a connections.
[20:51:37] HIGH NNTPSocket - MODE READER
[20:51:37] HIGH NNTPSocket - MODE READER
[20:51:37] HIGH NNTPSocket - 200 news.usenetserver.com Welcome! (fed15.iad) (Posting Allowed)[/color]
[20:51:37] HIGH NNTPSocket - XFEATURE COMPRESS GZIP
[20:51:37] HIGH NNTPSocket - 200 news.usenetserver.com Welcome! (fed15.iad) (Posting Allowed)
[20:51:37] HIGH NNTPSocket - XFEATURE COMPRESS GZIP
[20:51:37] HIGH NNTPSocket - 290 Feature Enabled
[20:51:37] HIGH NNTPSocket - ARTICLE <1317159144.84929.1@eu.news.astraweb.com>
This shows that 2 of the 3 connections worked.
[20:51:37] HIGH NNTPSocket - XFEATURE COMPRESS GZIP
[20:51:37] HIGH NNTPSocket - 200 news.usenetserver.com Welcome! (fed15.iad) (Posting Allowed)
Is Newsbin telling the server "I accept compressed headers".
You're not actually downloading headers here so, compression isn't even turned on.