Index: wp-admin/includes/file.php
===================================================================
--- wp-admin/includes/file.php	(revision 17563)
+++ wp-admin/includes/file.php	(working copy)
@@ -225,6 +225,7 @@
  * @uses delete_transient
  * @param array $file Reference to a single element of $_FILES. Call the function once for each uploaded file.
  * @param array $overrides Optional. An associative array of names=>values to override default variables with extract( $overrides, EXTR_OVERWRITE ).
+ * @param string $time Optional. Time formatted in yyyy/mm 
  * @return array On success, returns an associative array of file attributes. On failure, returns $overrides['upload_error_handler'](&$file, $message ) or array( 'error'=>$message ).
  */
 function wp_handle_upload( &$file, $overrides = false, $time = null ) {
@@ -357,9 +358,10 @@
  * @uses wp_unique_filename
  * @param array $file an array similar to that of a PHP $_FILES POST array
  * @param array $overrides Optional. An associative array of names=>values to override default variables with extract( $overrides, EXTR_OVERWRITE ).
+ * @param string $time Optional. Time formatted in yyyy/mm 
  * @return array On success, returns an associative array of file attributes. On failure, returns $overrides['upload_error_handler'](&$file, $message ) or array( 'error'=>$message ).
  */
-function wp_handle_sideload( &$file, $overrides = false ) {
+function wp_handle_sideload( &$file, $overrides = false, $time = null ) {
 	// The default error handler.
 	if (! function_exists( 'wp_handle_upload_error' ) ) {
 		function wp_handle_upload_error( &$file, $message ) {
@@ -436,7 +438,7 @@
 	}
 
 	// A writable uploads dir will pass this test. Again, there's no point overriding this one.
-	if ( ! ( ( $uploads = wp_upload_dir() ) && false === $uploads['error'] ) )
+	if ( ! ( ( $uploads = wp_upload_dir( $time ) ) && false === $uploads['error'] ) )
 		return $upload_error_handler( $file, $uploads['error'] );
 
 	$filename = wp_unique_filename( $uploads['path'], $file['name'], $unique_filename_callback );
Index: wp-admin/includes/media.php
===================================================================
--- wp-admin/includes/media.php	(revision 17563)
+++ wp-admin/includes/media.php	(working copy)
@@ -251,8 +251,14 @@
  */
 function media_handle_sideload($file_array, $post_id, $desc = null, $post_data = array()) {
 	$overrides = array('test_form'=>false);
-
-	$file = wp_handle_sideload($file_array, $overrides);
+	
+	$time = null;
+	if ( $post = get_post($post_id) ) {
+		if ( substr( $post->post_date, 0, 4 ) > 0 )
+			$time = $post->post_date;
+	}
+	
+	$file = wp_handle_sideload( $file_array, $overrides, $time );
 	if ( isset($file['error']) )
 		return new WP_Error( 'upload_error', $file['error'] );