I have the issue too now on my roku 2 xs. It just happened now when I turned on the tv and pushed play on the remote. It resumed my video playback and then froze, letting the video play with no control over it. The light blue light on the roku ditters twice when a remote button is pushed, so the remote is sending and being acknowledged, but nothing happens. I had to unplug the roku to force reboot.
For the last year or so the box has run so well that I just bought a second 2XS off of CL. Three years or whatever after I bought it new, my Roku 2XS finally had the rewind/subtitles working, and was not hanging/rebooting and it had just been great. It was still laggy but acceptable. After that good year or so of proper function, about 2 weeks back, it hung while playing a video - the video kept playing but the remote seemed dead. It happened again so I tossed the batteries that weren't that old and put in fresh ones. A couple days later it happened again... then I noticed some stupid song upon the hard reset/dancing roku. It was then that I looked and saw that it was updated to v7.0 on nov 24, which is a correct timeframe for the problems.
By all means please return us to Nov 23 version - it was the best this Roku2XS ever worked.