Another interesting observation. I decided to see if maybe the 3G issue was specific to purchasing new books and perhaps I could re-download a large book I had previously purchased. When you go to "My Purchased Content" within your account page in the Reader Store, you can view your purchased books and there is a button that says "Download Now". Browsing through my list of books, I noticed that there are a few that say "Not Downloadable". They are all large size books. When I click on the "Not Downloadable", I get that same message to use my computer instead. When I switch over to Wi-Fi and look at my purchased content in my account, they all say "Download Now" with no problems.
|