diff -ur pidgin-libnotify-0.14/src/pidgin-libnotify.c pidgin-libnotify-0.14.new/src/pidgin-libnotify.c
--- pidgin-libnotify-0.14/src/pidgin-libnotify.c	2008-12-14 17:45:51.000000000 +0000
+++ pidgin-libnotify-0.14.new/src/pidgin-libnotify.c	2011-03-14 21:09:23.523914000 +0000
@@ -286,7 +286,12 @@
 		g_free (tr_body);
 		return;
 	}
+/* the fourth argument was removed in libnotify 0.7.0 */
+#if !defined(NOTIFY_VERSION_MINOR) || (NOTIFY_VERSION_MAJOR == 0 && NOTIFY_VERSION_MINOR < 7)
 	notification = notify_notification_new (title, tr_body, NULL, NULL);
+#else
+	notification = notify_notification_new (title, tr_body, NULL);
+#endif
 	purple_debug_info (PLUGIN_ID, "notify(), new: "
 					 "title: '%s', body: '%s', buddy: '%s'\n",
 					 title, tr_body, best_name (buddy));