rsync breaks suddenly while syncing

[Markus Darges]

Hello,

since two weeks I got problems with my rysnc. I wrote a script to sync 
our ftp-server. Everything was working fine. Yet am getting errors like

rsync: connection unexpectedly closed (130353504 bytes received so far) [receiver]
rsync: writefd_unbuffered failed to write 4092 bytes: phase "unknown" [generator]: Connection reset by peer (104)
rsync error: error in rsync protocol data stream (code 12) at io.c(909)
rsync error: error in rsync protocol data stream (code 12) at io.c(359)

on mirror  ftp.gwdg.de::pub/linux/suse/ftp.suse.com/suse/i386/ 

or for example on thar mirror:

 rsync.uni-bayreuth.de::fedora-linux-extras/  
 
rsync: read error: Connection reset by peer (104)
rsync error: error in rsync protocol data stream (code 12) at io.c(515)
rsync: connection unexpectedly closed (1771248 bytes received so far) [generator]
rsync error: error in rsync protocol data stream (code 12) at io.c(359)


I am using rsync-2.6.3-1.rpm. OS is fedora core 3 with kernel 2.6.10. 
df shows that only half of my space is used.

Any idea what that could be?

Thanks,

Markus