I'm with Scooberton. My Touch (before I returned it) was an early one, and even after a couple of firmware updates, it was still unacceptably buggy AFAIC.
Even if the testers at Kobo do have all the production versions to test with, they do not appear to be very good at identifying obvious bugs.
Or perhaps the issue is with the decision-makers who elect to release known-problematic versions because identified issues would take too long to fix and re-test.
One way or the other, it seems plain that there is a failure somewhere in the management chain.