Index: iTunes/Plugin.pm
===================================================================
--- iTunes/Plugin.pm	(revision 15772)
+++ iTunes/Plugin.pm	(working copy)
@@ -79,7 +79,7 @@
 	}
 
 	# make sure we aren't doing this more than once...
-	Slim::Utils::Timers::killTimers(0, \&checker);
+	Slim::Utils::Timers::killTimers(1, \&checker);
 
 	my $interval = $prefs->get('scan_interval') || 3600;
 
@@ -90,7 +90,7 @@
 
 	$log->info("setting checker for $interval seconds from now.");
 
-	Slim::Utils::Timers::setTimer(0, Time::HiRes::time() + $interval, \&checker);
+	Slim::Utils::Timers::setTimer(1, Time::HiRes::time() + $interval, \&checker);
 }
 
 1;
Index: iTunes/Settings.pm
===================================================================
--- iTunes/Settings.pm	(revision 15772)
+++ iTunes/Settings.pm	(working copy)
@@ -12,6 +12,7 @@
 use Slim::Utils::Misc;
 use Slim::Utils::Strings qw(string);
 use Slim::Utils::Prefs;
+use Slim::Plugin::iTunes::Plugin;
 
 my $log = Slim::Utils::Log->addLogCategory({
 	'category'     => 'plugin.itunes',
@@ -45,6 +46,18 @@
 	},
 'itunes');
 
+$prefs->setChange(
+	sub {
+			Slim::Utils::Timers::killTimers(1, \&Slim::Plugin::iTunes::Plugin::checker);
+		
+			my $interval = $prefs->get('scan_interval') || 3600;
+		
+			$log->info("re-setting checker for $interval seconds from now.");
+		
+			Slim::Utils::Timers::setTimer(1, Time::HiRes::time() + $interval, \&Slim::Plugin::iTunes::Plugin::checker);
+	},
+'scan_interval');
+
 sub name {
 	return Slim::Web::HTTP::protectName('ITUNES');
 }