Hullo!
I have a new Glo HD, and a bit of a problem - though it might be because of the last Kobo update; I had a Glo before that I hadn't updated yet, and I've already given it away so I can't check
(rookie mistake! I blame the holiday fever)
All the Fanficfare downloads from AO3 make my Glo HD freeze when I want to open the book. Either it gets stuck on the Library page, and I have to turn it off and on again, either it opens but on a white page, and I have to go back to the library, and open it again.
If I download from AO3 manually, it works fine.
I tested with fanfiction.net, it works fine too, so it might me an AO3-specific problem.