I've about the same problem with xlned.com. SSL connections work for some time, but eventually all I get is "Could not connect". Closing connections and retrying helps... for some minutes.
Server: reader4.xlned.com
port: 563 SSL
But without SSL there is the same problem.
With 0.36.2 no problems at all. Just for testing I reverted back to 36.2. and downloaded 8 gigs without a problem. I then installed 0.37.1. again and after one minute I got the error.
[26.03.2011 19:49:36] [Main] Alt.Binz 0.37.1 [25.03.2011] started.
[26.03.2011 19:49:36] [Main] Windows 7 or Windows Server 2008 R2
[26.03.2011 19:49:40] [Main] 0 items loaded into download history list in 0ms.
[26.03.2011 19:49:40] [Main] 0 outdated items removed from download history list in 0ms.
[26.03.2011 19:49:40] [T4] Hello
[26.03.2011 19:49:40] [T2] Hello
[26.03.2011 19:49:40] [T6] Hello
[26.03.2011 19:49:40] [T8] Hello
[26.03.2011 19:49:40] [T1] Hello
[26.03.2011 19:49:40] [T3] Hello
[26.03.2011 19:49:40] [T5] Hello
[26.03.2011 19:49:40] [T7] Hello
[26.03.2011 19:50:10] [T4] Connecting (Xlned)
[26.03.2011 19:50:10] [T2] Connecting (Xlned)
[26.03.2011 19:50:10] [T3] Connecting (Xlned)
[26.03.2011 19:50:10] [T8] Connecting (Xlned)
[26.03.2011 19:50:10] [T7] Connecting (Xlned)
[26.03.2011 19:50:10] [T1] Connecting (Xlned)
[26.03.2011 19:50:10] [T5] Connecting (Xlned)
[26.03.2011 19:50:10] [T6] Connecting (Xlned)
[26.03.2011 19:50:10] [T4] Connected & Authenticated (Xlned) - 201 reader20.xlned.com NNRP Service Ready - usenet@xlned.com (no posting)(no reading).
....
[26.03.2011 19:50:11] [T1] Article started...
[26.03.2011 19:50:11] [T3] Article finished...
...
[26.03.2011 19:51:01] [T3] StatusCode: 0
[26.03.2011 19:51:01] [T3] Connecting (Xlned)
[26.03.2011 19:51:01] [T4] StatusCode: 0
[26.03.2011 19:51:01] [T4] Connecting (Xlned)
[26.03.2011 19:51:02] [T3] Could not connect (Xlned)
[26.03.2011 19:51:02] [T4] Could not connect (Xlned)