Hi all! Two weeks ago we started to have replication problems. We have more than 1050 domain controllers, each in separate office branch (one site for each DC). There is a HUB site, where four DCs are situated. Each of them is Bridgehead. Each branch has a cisco 1711 router which make VPN connection to the HUB office. WAN Speed: 1 MBit/s download; 128KBit/s upload - ADSL. On some servers when you try to replicate the domain naming context (dc=ourdomain,dc=net) we get "DS_REPLICA SYNC FAILED: The remote procedure call was cancelled". We've installed http://support.microsoft.com/kb/898060/en , but still no luck. There are no firewalls turned on. Operating system: Windows Server 2003 Std. with SP1. Anyone can help?