Wirelessly posted (Mozilla/5.0 (iPhone; CPU iPhone OS 5_0_1 like Mac OS X) AppleWebKit/534.46 (KHTML, like Gecko) Version/5.1 Mobile/9A405 Safari/7534.48.3) Quick question for those with the AT&T data plan. I assume the plan auto-renews each month until you turn it off. Can the plan itself be turned on and off on the iPad? I come back to the US every few months or so and would like to be able to turn the plan on/off depending on my travel plans, but when I went to AT&T, I was led to believe that the process would be quite complicated and may require getting a new SIM each time I turn the plan back on. Is that right?