vinagre "connection closed" error

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http://forums.opensuse.org – I'm trying to use Vinagre on openSUSE 11.2 to make remote connection to another host. I keep getting a "connection closed" message. This happens both when I try to connect to my local XP box (which has Remote Desktop activated) or when I try to connect to a server on the network. (It looks like my firewall has VNC, VNC Server, and VNC mini-HTTP Server all as Allowed Services.) The local XP box doesn't have any trouble making a Remote Desktop Connection to the external server. With my old 11.1 installation I had no trouble making remote desktop connections. Is there something that I have to tweak with the new installation? (Distributions)