My wife uses the YouTube feature of our Series 3 all the time. Or she used to. Sometime in the last couple of months, it became unusably slow. It now takes tens of seconds just to show the menu where YouTube, Amazon, etc., then another 15-20 seconds to bring up the YouTube interface, then several seconds per menu item to scroll down to "Search", and then, when typing in a search, every time it starts doing its partial lookups, it gets stuck for more tens of seconds at a time. Anyone ever seen this, or, even better, know how to fix it?