Dear Craig,

> It turns out the code always tries the unix
> domain socket first. 

I used the "bogus name for the sockFile" method, hence:
        my $sockFile = "$bpc->{LogDir}/BackupPC.sockNot";

Now BackupPC obviously uses tcp, because after launching the 
BackupPC_serverMesg command, netstat shows:
tcp        0      0 nslu2.:2359             nslu2.:41584        ESTABLISHED
tcp        0      0 nslu2.:41584            nslu2.:2359         ESTABLISHED

But then the execution hangs at the same line as before:
BackupPC::Lib::ServerConnect(/mnt/usbstick/usr/local/BackupPC/lib/BackupPC/Lib.pm:698):
698:        sysread($bpc->{ServerFD}, $bpc->{ServerSeed}, 1024);

strace shows that again the execution hangs when trying to make the read() 
system call:
read(3,

So it seems that the problem is the same with the tcp connection as with the 
unix socket.

Do you have any further idea what the problem could be?

Does anybody know why the read() system call might hang?

Christoph

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