hello! For preformance reasons I tried to replace ssh transport with an old style rsh. In this case security is not a problem, because there is a dedicated network (crosscable) between the two hosts. While with ssh everything works just fine, there are problems when I use rsh. like that: Invalid block length -1235276150 [sender] rsync error: protocol incompatibility (code 2) at io.c(1333) [sender=3.0.6] It is not reproducable and it seems that the remote shell is not transparent, but it maybe it can be a timing problem too. rsync version 3.0.6 dies with errors while version 2.6.9 is hanging. Does anybody else have problems with rsh? Both systems have installed Ubuntu Linux 8.04 cu, Stefan