rsync operation times out on excluded directory

Hello list, I have the following problem for awhile now. A backup script is running on server Backup. Every night a complete backup of /home is made of server Server, using rsync over SSH. (rsync version 3.0.2 on Debian/Linux) Now. There is one user, that has a NFS mount in his homedirectory on S

rsync: hlink.c:271: check_prior: Assertion `node->data != ((void *)0)' failed.

BLS #rsync --version rsync version 3.0.4pre2 protocol version 30 Copyright (C) 1996-2008 by Andrew Tridgell, Wayne Davison, and others. Web site: http://rsync.samba.org/ Capabilities: 64-bit files, 64-bit inums, 32-bit timestamps, 64-bit long ints, socketpairs, hardlinks, symlinks, IPv6,