A couple notes for the posters overnight:
There are two versions this week, HR20 got 0254 and the HR21 got 0255. No difference in the notes, probably a last minute slight change for the HR21.
It is normal to expect the system to be slow for a few hours after any reboot, especially a software download. Things like VOD have to redownload the "channels" to the receiver, and the receiver is busy downloading information including guide updates, and rebuilding the to-do list (sometimes it will be empty or missing some after a reboot, they are still there, just being reprocessed).
I usually recomend waiting until the next day to give it a good workout, especially when looking at response times, they will be slower at first because the box is busy.
Hope that explains it well, and helps explain why the box is sluggish after a download.