diff --git a/source/pkgi.c b/source/pkgi.c
index c84f4c7..1106295 100644
--- a/source/pkgi.c
+++ b/source/pkgi.c
@@ -700,9 +700,9 @@ static void pkgi_load_language(const char* lang)
     mini18n_set_locale(path);
 }
 
-static int pkgi_security_check()
+static int pkgi_security_check(void)
 {
-    return 0;
+    return 1;
 }
 
 int main(int argc, const char* argv[])
diff --git a/source/pkgi_ps3.c b/source/pkgi_ps3.c
index d0ac3ae..3634137 100644
--- a/source/pkgi_ps3.c
+++ b/source/pkgi_ps3.c
@@ -44,6 +44,9 @@
 
 #define PKGI_USER_AGENT "Mozilla/5.0 (PLAYSTATION 3; 1.00)"
 
+#define PKGI_CURL_BUFFER_SIZE   (256 * 1024L)
+#define PKGI_FILE_BUFFER_SIZE   (256 * 1024)
+
 
 struct pkgi_http
 {
@@ -1154,6 +1157,10 @@ void pkgi_curl_init(CURL *curl)
     // request using SSL for the FTP transfer if available
     curl_easy_setopt(curl, CURLOPT_USE_SSL, CURLUSESSL_TRY);
 
+    curl_easy_setopt(curl, CURLOPT_BUFFERSIZE, PKGI_CURL_BUFFER_SIZE);
+    curl_easy_setopt(curl, CURLOPT_TCP_KEEPALIVE, 1L);
+    curl_easy_setopt(curl, CURLOPT_TCP_KEEPINTVL, 30L);
+
     // check for proxy settings
     memset(&proxy_info, 0, sizeof(proxy_info));
     netCtlGetInfo(NET_CTL_INFO_HTTP_PROXY_CONFIG, &proxy_info);
@@ -1367,6 +1374,7 @@ void* pkgi_create(const char* path)
         LOG("cannot create %s, err=0x%08x", path, fd);
         return NULL;
     }
+    setvbuf(fd, NULL, _IOFBF, PKGI_FILE_BUFFER_SIZE);
     LOG("fopen returned fd=%d", fd);
 
     return (void*)fd;
@@ -1395,6 +1403,7 @@ void* pkgi_append(const char* path)
         LOG("cannot append %s, err=0x%08x", path, fd);
         return NULL;
     }
+    setvbuf(fd, NULL, _IOFBF, PKGI_FILE_BUFFER_SIZE);
     LOG("fopen returned fd=%d", fd);
 
     return (void*)fd;