diff -r 3f646804ed6a -r dcd1c0a90b2f plugins/mod_presence.lua
--- a/plugins/mod_presence.lua	Wed Feb 10 00:12:48 2010 +0500
+++ b/plugins/mod_presence.lua	Fri Feb 12 00:54:14 2010 +0500
@@ -18,6 +18,7 @@
 local jid_split = require "util.jid".split;
 local jid_bare = require "util.jid".bare;
 local hosts = hosts;
+local NULL = {};
 
 local rostermanager = require "core.rostermanager";
 local sessionmanager = require "core.sessionmanager";
@@ -63,7 +64,8 @@
 function handle_normal_presence(origin, stanza, core_route_stanza)
 	local roster = origin.roster;
 	local node, host = origin.username, origin.host;
-	for _, res in pairs(hosts[host].sessions[node].sessions) do -- broadcast to all resources
+	local user = bare_sessions[node.."@"..host];
+	for _, res in pairs(user and user.sessions or NULL) do -- broadcast to all resources
 		if res ~= origin and res.presence then -- to resource
 			stanza.attr.to = res.full_jid;
 			core_route_stanza(origin, stanza);
@@ -84,7 +86,7 @@
 				core_route_stanza(origin, probe);
 			end
 		end
-		for _, res in pairs(hosts[host].sessions[node].sessions) do -- broadcast from all available resources
+		for _, res in pairs(user and user.sessions or NULL) do -- broadcast from all available resources
 			if res ~= origin and res.presence then
 				res.presence.attr.to = origin.full_jid;
 				core_route_stanza(res, res.presence);