Okay, it works fine, BUT, the installer only care for the 6 first digits so if you have more than a build the same month, it won't work.
Maybe i should have adapted the regexp.
2011-03-20 20:42:09.2814-NLog.LoggerImpl.Write|Trace|Successfully downloaded html page
http://xbmc.shadowprojects.net/shadok/
2011-03-20 20:42:09.2814-NLog.LoggerImpl.Write|Info|Trying to parse out the builds list from HTML string
2011-03-20 20:42:09.2814-NLog.LoggerImpl.Write|Info|Total of 1 builds were found. Latest:201103
2011-03-20 20:42:09.2814-NLog.LoggerImpl.Write|Info|Latest available build:201103. Currently installed:35744
2011-03-20 20:42:09.2814-NLog.LoggerImpl.Write|Info|Rev:35744, Installation Date:16/01/2011 23:27:20, Supplier:
2011-03-20 20:42:09.2970-NLog.LoggerImpl.Write|Info|Rev:35744, Installation Date:16/01/2011 23:27:20, Supplier:
2011-03-20 20:42:47.0958-NLog.LoggerImpl.Write|Info|Rev:35744, Installation Date:16/01/2011 23:27:20, Supplier:
2011-03-20 20:42:47.1114-NLog.LoggerImpl.Write|Info|Setting System State to [ES_CONTINUOUS]
2011-03-20 20:42:47.1270-NLog.LoggerImpl.Write|Info|Rev:35744, Installation Date:16/01/2011 23:27:20, Supplier:
2011-03-20 20:42:47.1426-XbmcUpdate.UpdateEngine.UpdateManager.DownloadBuild|Info|Downloading build 201103 from the server
2011-03-20 20:44:49.4156-NLog.LoggerImpl.Write|Info|Download completed successfully
2011-03-20 20:44:50.3516-NLog.LoggerImpl.Write|Info|Rev:35744, Installation Date:16/01/2011 23:27:20, Supplier:
2011-03-20 20:44:50.3672-NLog.LoggerImpl.Write|Info|Rev:35744, Installation Date:16/01/2011 23:27:20, Supplier:
2011-03-20 20:44:50.3984-NLog.LoggerImpl.Write|Info|Extracting Update 201103 to C:\Program Files (x86)\XBMC\Update-dx\temp\\XBMC-201103\\xbmc\
2011-03-20 20:47:43.2312-NLog.LoggerImpl.Write|Info|All files extracted successfully
2011-03-20 20:47:43.2312-NLog.LoggerImpl.Write|Info|Rev:35744, Installation Date:16/01/2011 23:27:20, Supplier:
2011-03-20 20:47:43.2468-NLog.LoggerImpl.Write|Info|Rev:35744, Installation Date:16/01/2011 23:27:20, Supplier:
2011-03-20 20:47:43.2624-NLog.LoggerImpl.Write|Info|Closing all instances of XBMC
2011-03-20 20:47:44.2764-NLog.LoggerImpl.Write|Info|Rev:35744, Installation Date:16/01/2011 23:27:20, Supplier:
2011-03-20 20:47:44.2920-NLog.LoggerImpl.Write|Info|Copying folder 'C:\Program Files (x86)\XBMC\Update-dx\temp\\XBMC-201103\\xbmc\'
...
2011-03-20 20:48:21.9816-XbmcUpdate.UpdateEngine.UpdateManager.ApplyUpdate|Info|Successfully updated to build 201103