diff --git a/LATEST_VERSION b/LATEST_VERSION
index 0c8dc502a..88c5427e0 100644
--- a/LATEST_VERSION
+++ b/LATEST_VERSION
@@ -1 +1 @@
-2012.02.27
+2012.09.27
diff --git a/youtube-dl b/youtube-dl
index 789cb58f5..21e604a25 100755
Binary files a/youtube-dl and b/youtube-dl differ
diff --git a/youtube_dl/InfoExtractors.py b/youtube_dl/InfoExtractors.py
index d95423f7d..8dd1c0b07 100644
--- a/youtube_dl/InfoExtractors.py
+++ b/youtube_dl/InfoExtractors.py
@@ -402,7 +402,7 @@ class YoutubeIE(InfoExtractor):
 			url_data_strs = video_info['url_encoded_fmt_stream_map'][0].split(',')
 			url_data = [parse_qs(uds) for uds in url_data_strs]
 			url_data = filter(lambda ud: 'itag' in ud and 'url' in ud, url_data)
-			url_map = dict((ud['itag'][0], ud['url'][0]) for ud in url_data)
+			url_map = dict((ud['itag'][0], ud['url'][0] + '&signature=' + ud['sig'][0]) for ud in url_data)
 
 			format_limit = self._downloader.params.get('format_limit', None)
 			available_formats = self._available_formats_prefer_free if self._downloader.params.get('prefer_free_formats', False) else self._available_formats
diff --git a/youtube_dl/__init__.py b/youtube_dl/__init__.py
index 86951840d..0122f725a 100644
--- a/youtube_dl/__init__.py
+++ b/youtube_dl/__init__.py
@@ -19,7 +19,7 @@ __authors__  = (
 	)
 
 __license__ = 'Public Domain'
-__version__ = '2012.02.27'
+__version__ = '2012.09.27'
 
 UPDATE_URL = 'https://raw.github.com/rg3/youtube-dl/master/youtube-dl'
 UPDATE_URL_VERSION = 'https://raw.github.com/rg3/youtube-dl/master/LATEST_VERSION'