Did you ever have a previous version on either system?I installed 1.6.7 on my desktop and laptop, with the only changes being setting up a share. I then downloaded the same podcast from twit.tv to both, the file size is identical. The desktop, connected to the linksys 802.11n router via ethernet cable, took about 5 min. to transfer the 1hr 29min file. The laptop took about 1.5 min over wifi. The file from the desktop shows the correct length on the roamio, while the file from the laptop shows the length 8 min. longer at 1hr 37min. When you fast forward the longer file from the laptop, it skips ahead many times faster than normal, then slows down but is jerky. The file from the desktop has normal navigation. Any ideas what is causing this?