[BackupPC-users] problem with backup. Please help

[webmaster <web...@ho...>]

client is running windows 2003 server.
server is running FreeBSD 5.2.1 

Once in a blue moon, backup is successful,  99% of the time, it fails 
miserably and I do not know where to begin to fix. 

Just now, I tried the manual command: 

$ /home/backuppc/bin/BackupPC_dump -v -i van-dir.com 

After about 1/2 hour of copying files,  I encountered a zillion lines of: 

Can't write 101470 bytes to socket
Can't write 101486 bytes to socket
Can't write 101502 bytes to socket
Can't write 101518 bytes to socket
Can't write 101534 bytes to socket
Can't write 101550 bytes to socket
Can't write 101566 bytes to socket
Can't write 101582 bytes to socket 

then finally,
Child is aborting
Can't write 107720 bytes to socket
Parent read EOF from child: fatal error!
Done: 198 files, 1360619949 bytes
Got fatal error during xfer (Child exited prematurely)
cmdSystemOrEval: about to system /sbin/ping -c 1 van-dir.com
cmdSystemOrEval: finished: got output PING van-dir.com (209.61.248.11): 56 
data bytes
64 bytes from 209.61.248.11: icmp_seq=0 ttl=126 time=0.447 ms 

 --- sh-w1.superb.net ping statistics ---
1 packets transmitted, 1 packets received, 0% packet loss
round-trip min/avg/max/stddev = 0.447/0.447/0.447/0.000 ms 

cmdSystemOrEval: about to system /sbin/ping -c 1 van-dir.com
cmdSystemOrEval: finished: got output PING van-dir.com (209.61.248.11): 56 
data bytes
64 bytes from 209.61.248.11: icmp_seq=0 ttl=126 time=1.203 ms 

 --- van-dir.com ping statistics ---
1 packets transmitted, 1 packets received, 0% packet loss
round-trip min/avg/max/stddev = 1.203/1.203/1.203/0.000 ms 

CheckHostAlive: returning 1.203
Backup aborted (Child exited prematurely)
dump failed: Child exited prematurely 

What can I do ?