About 9 months ago I purchased an external Western Digital 2 TB hard drive. I just crossed the 1 TB mark and now any video I add to the hard drive causes my computer to freeze when played. Everything added over the last few months still plays fine, everything added in the last couple of days locks up my system. As shown in this video clip the previews open quickly but ANY thing I have tried to add in the last day or so freezes up my system. The video files played from the external hard drive cause the same problem on my iMac and new Mac Book Pro but play fine directly from the computer. Any ideas what could be causing the problem? I used handbreak to encode the videos. http://www.youtube.com/watch?v=ci_TgzPsVGM Thank you.