Advertisements Have had my Tivo HD DVR and WD 500 gb Expander since 8/16/08. No problems until a month ago, then pixelization and finally frozen screens resulting in partial recordings. Had Comcast out 6 times. Ran Tivo disk tests. Indicated no problems. Yesterday I disconnected the external drive and have been running fine for 24 hours. Am returning the drive to WD. Interested in seeing if the replacement will solve the problem.