Hello,
I got a comparable problem.
Setup: Kobo Touch (N905, the "first" version). Mac (old PPC) and PC (Windows 7). Around the time I updated to 3.2.0, the USB connection started to act odd, but only when connecting the Kobo to an USB-Hub (I use two different Hubs from different manufactures on the two computers). Either the Kobo doesn't show the "connect" dialog upon plug-in, or it flashes only for fractions of a second. Charging works nevertheless (green LED). When I let it sit for a while it sometimes miraculously pops up the dialog and I can mount it. But if I copy some books over the connection drops randomly (the more I copy, the bigger the chances are. More than approx. 10 MB and an eject is a near certainty). Again, this only happens when using an USB-Hub. When using an USB port, this doesn't happen. Very annoying.
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