diff --git a/libslv2/examples/hosts/.jack_host.c.swp b/libslv2/examples/hosts/.jack_host.c.swp
deleted file mode 100644
index eb9bb865..00000000
Binary files a/libslv2/examples/hosts/.jack_host.c.swp and /dev/null differ
diff --git a/libslv2/examples/plugins/Amp-swh.lv2/Makefile b/libslv2/examples/plugins/Amp-swh.lv2/Makefile
index 4fb858a0..55180c2b 100644
--- a/libslv2/examples/plugins/Amp-swh.lv2/Makefile
+++ b/libslv2/examples/plugins/Amp-swh.lv2/Makefile
@@ -1,4 +1,4 @@
-CFLAGS = -Wall -I../../../include
+CFLAGS = -Wall -I../../../include -fPIC
 
 all: amp.so
 
diff --git a/libslv2/examples/plugins/Amp-swh.lv2/amp.so b/libslv2/examples/plugins/Amp-swh.lv2/amp.so
deleted file mode 100755
index 281b709f..00000000
Binary files a/libslv2/examples/plugins/Amp-swh.lv2/amp.so and /dev/null differ
diff --git a/libslv2/src/plugin.c b/libslv2/src/plugin.c
index 27fb481e..8c7a4cc8 100644
--- a/libslv2/src/plugin.c
+++ b/libslv2/src/plugin.c
@@ -60,7 +60,7 @@ const unsigned char*
 slv2_plugin_get_data_path(const SLV2Plugin* p)
 {
 	assert(p);
-	if (!strncmp((char*)p->data_url, "file://", 7))
+	if (!strncmp((char*)p->data_url, "file://", (size_t)7))
 		return (p->data_url) + 7;
 	else
 		return NULL;
@@ -79,7 +79,7 @@ const unsigned char*
 slv2_plugin_get_library_path(const SLV2Plugin* p)
 {
 	assert(p);
-	if (!strncmp((char*)p->lib_url, "file://", 7))
+	if (!strncmp((char*)p->lib_url, "file://", (size_t)7))
 		return (p->lib_url) + 7;
 	else
 		return NULL;
@@ -152,7 +152,7 @@ slv2_plugin_get_property(const SLV2Plugin* p,
 	rasqal_query_results* results = slv2_plugin_run_query(p,
 		U("SELECT DISTINCT ?value FROM data: WHERE { \n"
 		  "plugin: "), property, U(" ?value . \n"
-		  "} \n"), 0);
+		  "} \n"), NULL);
 	
 	struct _Property* result = slv2_query_get_results(results);
 
@@ -175,7 +175,7 @@ slv2_plugin_get_num_ports(const SLV2Plugin* p)
 	rasqal_query_results* results = slv2_plugin_run_query(p,
 		U("SELECT DISTINCT ?value FROM data: WHERE { \n"
 		  "plugin: lv2:port ?value . \n"
-		  "} \n"), 0);
+		  "} \n"), NULL);
 	
 	while (!rasqal_query_results_finished(results)) {
 		++result;
diff --git a/libslv2/src/pluginlist.c b/libslv2/src/pluginlist.c
index 61e4c4b6..20e9dea4 100644
--- a/libslv2/src/pluginlist.c
+++ b/libslv2/src/pluginlist.c
@@ -138,9 +138,12 @@ slv2_list_load_bundle(SLV2List             list,
 		rasqal_query_results_next(results);
 	}
 
-	rasqal_free_query_results(results);
-	rasqal_free_query(rq);
-	raptor_free_uri(base_uri);
+	// FIXME: leaks?  rasqal really doesn't handle missing files well..
+	if (results) {
+		rasqal_free_query_results(results);
+		rasqal_free_query(rq);
+		raptor_free_uri(base_uri); // FIXME: leak?
+	}
 	rasqal_finish();
 
 	free(manifest_uri);
@@ -162,8 +165,8 @@ add_plugins_from_dir(SLV2List list, const char* dir)
 		if (!strcmp(pfile->d_name, ".") || !strcmp(pfile->d_name, ".."))
 			continue;
 
-		char* bundle_path = (char*)ustrjoin(U(dir), U("/"), U(pfile->d_name), 0);
-		char* bundle_url = (char*)ustrjoin(U("file://"), U(dir), U("/"), U(pfile->d_name), 0);
+		char* bundle_path = (char*)ustrjoin(U(dir), U("/"), U(pfile->d_name), NULL);
+		char* bundle_url = (char*)ustrjoin(U("file://"), U(dir), U("/"), U(pfile->d_name), NULL);
 		DIR* bundle_dir = opendir(bundle_path);
 
 		if (bundle_dir != NULL) {
@@ -185,7 +188,7 @@ slv2_list_load_path(SLV2List  list,
                     const char* slv2_path)
 {
 	
-	char* path = (char*)ustrjoin(U(slv2_path), U(":"), 0);
+	char* path = (char*)ustrjoin(U(slv2_path), U(":"), NULL);
 
 	char* dir = path; // Pointer into path
 	
diff --git a/libslv2/src/port.c b/libslv2/src/port.c
index e25eb2f5..14d95ff1 100644
--- a/libslv2/src/port.c
+++ b/libslv2/src/port.c
@@ -72,7 +72,7 @@ slv2_port_get_property(SLV2Plugin* p,
 	assert(property);
 
 	char index_str[4];
-	snprintf(index_str, 4, "%ld", index);
+	snprintf(index_str, (size_t)4, "%lu", index);
 	
 	rasqal_init();
 	
@@ -80,7 +80,7 @@ slv2_port_get_property(SLV2Plugin* p,
 		U("SELECT DISTINCT ?value FROM data: WHERE { \n"
 		  "plugin: lv2:port ?port \n"
 		  "?port lv2:index "), index_str, U(" \n"
-		  "?port "), property, U(" ?value . \n}\n"), 0);
+		  "?port "), property, U(" ?value . \n}\n"), NULL);
 	
 	SLV2Property result = slv2_query_get_results(results);
 
diff --git a/libslv2/src/query.c b/libslv2/src/query.c
index 20307355..ddaf6485 100644
--- a/libslv2/src/query.c
+++ b/libslv2/src/query.c
@@ -35,7 +35,7 @@ slv2_query_header(const SLV2Plugin* p)
 		  "PREFIX doap:   <http://usefulinc.com/ns/doap#> \n"
 		  "PREFIX lv2:    <http://lv2plug.in/ontology#> \n"
 		  "PREFIX plugin: <"), plugin_uri, U("> \n"),
-		U("PREFIX data:   <"), data_file_url, U("> \n\n"), 0);
+		U("PREFIX data:   <"), data_file_url, U("> \n\n"), NULL);
 
 	return query_string;
 }
@@ -51,7 +51,7 @@ slv2_query_lang_filter(const uchar* variable)
 		result = ustrjoin(
 			//U("FILTER (lang(?value) = \""), lang, U("\")\n"), 0);
 			U("FILTER( lang(?value) = \""), lang, 
-			U("\" || lang(?value) = \"\" )\n"), 0);
+			U("\" || lang(?value) = \"\" )\n"), NULL);
 	}
 
 	return result;
@@ -62,16 +62,17 @@ rasqal_query_results*
 slv2_plugin_run_query(const SLV2Plugin* p,
                       const uchar*        first, ...)
 {
-	va_list args_list;
-	va_start(args_list, first);
-	va_list args_copy;
-	va_copy(args_copy, args_list);
 
 	/* FIXME:  Too much unecessary allocation */
 	uchar* header = slv2_query_header(p);
-	uchar* args_str = vstrjoin(first, args_copy);
-	uchar* query_str = ustrjoin(header, args_str, 0);
 	
+	va_list args_list;
+	va_start(args_list, first);
+
+	uchar* args_str = vstrjoin(first, args_list);
+	uchar* query_str = ustrjoin(header, args_str, NULL);
+	va_end(args_list);
+
 	assert(p);
 	assert(query_str);
 
diff --git a/libslv2/src/util.c b/libslv2/src/util.c
index 55953b80..1058b8d9 100644
--- a/libslv2/src/util.c
+++ b/libslv2/src/util.c
@@ -50,49 +50,30 @@ ustrdup(const uchar* src)
 uchar*
 ustrjoin(const uchar* first, ...)
 {
-	// FIXME: this is horribly, awfully, disgracefully slow
-	
 	va_list args_list;
 	va_start(args_list, first);
 	
-	va_list args_copy;
-	va_copy(args_copy, args_list);
-	
-	uchar* result = vstrjoin(first, args_copy);
-	
-	//va_end(args_copy);
+	uchar* result = vstrjoin(first, args_list);
+
 	va_end(args_list);
 	
 	return result;
-
-	/*
-	va_list args_list;
-	uchar*  arg = NULL;
-	uchar*  result = ustrdup(first);
-	
-	va_start(args_list, first);
-	
-	while ((arg = va_arg(args_list, uchar*)) != (uchar*)0)
-		ustrappend(&result, arg);
-	
-	va_end(args_list);
-
-	return result;*/
 }
 
 
 uchar*
 vstrjoin(const uchar* first, va_list args_list)
 {
-	// FIXME: this is horribly, awfully, disgracefully slow
+	// FIXME: this is horribly, awfully, disgracefully slow.
+	// so I'm lazy.
 	
 	uchar* arg = NULL;
 	uchar* result = ustrdup(first);
-	
-	while ((arg = va_arg(args_list, uchar*)) != NULL)
+
+	while ((arg = va_arg(args_list, const uchar*)) != NULL)
 		ustrappend(&result, arg);
 	
-	va_end(args_list);
+	//va_end(args_list);
 
 	return result;
 }
@@ -112,7 +93,7 @@ url2path(const uchar* const url)
 	char* result = calloc(strlen((char*)url)-7+1, sizeof(char));
 	strcpy(result, (char*)url+7);
 	return result;*/
-	if (!strncmp((char*)url, "file://", 7))
+	if (!strncmp((char*)url, "file://", (size_t)7))
 		return (char*)url + 7;
 	else
 		return NULL;