I couldn't activate my Rogers 3g account after an hour and 1/2 on the phone with Rogers, and having received "plan update failure" email, I went to the Apple store in Vancouver. A "Genius" gave me a second SIM card which didn't work either. They then tried the two rogers SIM cards in their ipad, and that didn't work. Finally, they gave me a Bell Mobility SIM card, instructed me to call Bell and set up my account, while they (the Genius) waited, and voila, I finally connected with Bell! I then had to call Rogers and cancel my original accounts.
Also, Rogers had told me that the problems was at their end.
Anyway, Rogers didn't work for me, but Bell Mobility, with the same data plan, works fine.