--- a/util/datamanager.lua	Mon Jul 23 16:42:26 2012 +0100
+++ b/util/datamanager.lua	Mon Jul 23 17:32:33 2012 +0100
@@ -115,18 +115,18 @@
 	if not data then
 		local mode = lfs.attributes(getpath(username, host, datastore), "mode");
 		if not mode then
-			log("debug", "Assuming empty "..datastore.." storage ('"..ret.."') for user: "..(username or "nil").."@"..(host or "nil"));
+			log("debug", "Assuming empty %s storage ('%s') for user: %s@%s", datastore, ret, username or "nil", host or "nil");
 			return nil;
 		else -- file exists, but can't be read
 			-- TODO more detailed error checking and logging?
-			log("error", "Failed to load "..datastore.." storage ('"..ret.."') for user: "..(username or "nil").."@"..(host or "nil"));
+			log("error", "Failed to load %s storage ('%s') for user: %s@%s", datastore, ret, username or "nil", host or "nil");
 			return nil, "Error reading storage";
 		end
 	end
 	setfenv(data, {});
 	local success, ret = pcall(data);
 	if not success then
-		log("error", "Unable to load "..datastore.." storage ('"..ret.."') for user: "..(username or "nil").."@"..(host or "nil"));
+		log("error", "Unable to load %s storage ('%s') for user: %s@%s", datastore, ret, username or "nil", host or "nil");
 		return nil, "Error reading storage";
 	end
 	return ret;
@@ -145,7 +145,7 @@
 	-- save the datastore
 	local f, msg = io_open(getpath(username, host, datastore, nil, true), "w+");
 	if not f then
-		log("error", "Unable to write to "..datastore.." storage ('"..msg.."') for user: "..(username or "nil").."@"..(host or "nil"));
+		log("error", "Unable to write to %s storage ('%s') for user: %s@%s", datastore, msg, username or "nil", host or "nil");
 		return nil, "Error saving to storage";
 	end
 	f:write("return ");
@@ -166,7 +166,7 @@
 	-- save the datastore
 	local f, msg = io_open(getpath(username, host, datastore, "list", true), "a+");
 	if not f then
-		log("error", "Unable to write to "..datastore.." storage ('"..msg.."') for user: "..(username or "nil").."@"..(host or "nil"));
+		log("error", "Unable to write to %s storage ('%s') for user: %s@%s", datastore, msg, username or "nil", host or "nil");
 		return;
 	end
 	f:write("item(");
@@ -184,7 +184,7 @@
 	-- save the datastore
 	local f, msg = io_open(getpath(username, host, datastore, "list", true), "w+");
 	if not f then
-		log("error", "Unable to write to "..datastore.." storage ('"..msg.."') for user: "..(username or "nil").."@"..(host or "nil"));
+		log("error", "Unable to write to %s storage ('%s') for user: %s@%s", datastore, msg, username or "nil", host or "nil");
 		return;
 	end
 	for _, d in ipairs(data) do
@@ -207,11 +207,11 @@
 	if not data then
 		local mode = lfs.attributes(getpath(username, host, datastore, "list"), "mode");
 		if not mode then
-			log("debug", "Assuming empty "..datastore.." storage ('"..ret.."') for user: "..(username or "nil").."@"..(host or "nil"));
+			log("debug", "Assuming empty %s storage ('%s') for user: %s@%s", datastore, ret, username or "nil", host or "nil");
 			return nil;
 		else -- file exists, but can't be read
 			-- TODO more detailed error checking and logging?
-			log("error", "Failed to load "..datastore.." storage ('"..ret.."') for user: "..(username or "nil").."@"..(host or "nil"));
+			log("error", "Failed to load %s storage ('%s') for user: %s@%s", datastore, ret, username or "nil", host or "nil");
 			return nil, "Error reading storage";
 		end
 	end
@@ -219,7 +219,7 @@
 	setfenv(data, {item = function(i) t_insert(items, i); end});
 	local success, ret = pcall(data);
 	if not success then
-		log("error", "Unable to load "..datastore.." storage ('"..ret.."') for user: "..(username or "nil").."@"..(host or "nil"));
+		log("error", "Unable to load %s storage ('%s') for user: %s@%s", datastore, ret, username or "nil", host or "nil");
 		return nil, "Error reading storage";
 	end
 	return items;