I noticed it when everything started lagging, the channel logos populated slowly.
It looks like it was doing house keeping.
Yes. I've noticed that many things are sluggish. The DVR recordings page graphics take a long time to paint.
Remote control selections are extremely sluggish - channel up took about 15 seconds.
Playing a recording results in a black screen for up to 15 seconds and then the remote is sluggish to respond.
And other similarly slow response times.
Happens on both the primary Hopper 3 and on the Joeys.