Index: wp-includes/functions.php
===================================================================
--- wp-includes/functions.php	(revision 13680)
+++ wp-includes/functions.php	(working copy)
@@ -1179,11 +1179,13 @@
 
 	foreach ( (array) $post_links_temp[0] as $link_test ) {
 		if ( !in_array( $link_test, $pung ) ) { // If we haven't pung it already
-			$test = parse_url( $link_test );
-			if ( isset( $test['query'] ) )
-				$post_links[] = $link_test;
-			elseif ( $test['path'] != '/' && $test['path'] != '' )
-				$post_links[] = $link_test;
+			$test = @parse_url( $link_test );
+			if (false !== $test) {
+				if ( isset( $test['query'] ) )
+					$post_links[] = $link_test;
+				elseif ( $test['path'] != '/' && $test['path'] != '' )
+					$post_links[] = $link_test;
+			}
 		}
 	}
 
@@ -1197,13 +1199,15 @@
 
 				// Check to see if we can figure out the mime type from
 				// the extension
-				$url_parts = parse_url( $url );
-				$extension = pathinfo( $url_parts['path'], PATHINFO_EXTENSION );
-				if ( !empty( $extension ) ) {
-					foreach ( get_allowed_mime_types( ) as $exts => $mime ) {
-						if ( preg_match( '!^(' . $exts . ')$!i', $extension ) ) {
-							$type = $mime;
-							break;
+				$url_parts = @parse_url( $url );
+				if (false !== $url_parts)
+					$extension = pathinfo( $url_parts['path'], PATHINFO_EXTENSION );
+					if ( !empty( $extension ) ) {
+						foreach ( get_allowed_mime_types( ) as $exts => $mime ) {
+							if ( preg_match( '!^(' . $exts . ')$!i', $extension ) ) {
+								$type = $mime;
+								break;
+							}
 						}
 					}
 				}