I think I've seen mine do that. I think it was checking for an update, or retrieving one. It may retrieve updates to streaming tiles like YouTube & Vudu, and that doesn't change the last update date.
I just saw that happen yesterday. People were saying a recently introduced problem with antenna tv was fixed. I went to my update menu and checked for an update. It updated a couple streaming channels. But, the last updated date remained Dec. 18. I believe, if it had done that during its scheduled check for updates, I would have seen the white light flash.
Maybe yours is doing it more frequently to be that? You could always cover the lens with black electrical tape.
"[Roku CEO] Wood’s goal is to control video access to the world — to be the 'one box that rules them all.'" (Techcrunch, February 23, 2011). The latest software update removed any doubt who rules & controls my TV.
