I've noticed this a couple of times now, and haven't seen any information posted about it, so I thought I'd ask here. :)
When I start to learn a new skill, I use points or emblems to speed up a skill until I'm learning at the quickest possible rate. However, when I return to the page after ~10 hours (sometimes less), I'm no longer learning at the accelerated rate. (The Magic Rock isn't sweating on the Skills page & there is no text under the skill to indicate accelerated learning.)
Does the speeding up only work for a Glitch day? Or a few hours? What's the deal?