My H2O does freeze occasionally, but it only requires a soft reset, not a hard one, so it's not really a problem.
Poor JohnnyB - I haven't seen anyone else with those kinds of complaints. I use Windows 7 rather than a Mac, but using Calibre with my Kobo (or my previous Sonys) has been trouble free.
I've been very happy with my H2O. I'm only not interested in the Aura One because I'd rather go smaller than larger. I'd really like one-handed operation. It's my dream
