Remember the days when governments were threatening to cut off BlackBerry's secure email because they couldn't spy on your messages? They're back. Pakistan's Telecommunication Authority has ordered local carriers to shut off BlackBerry Enterprise Service from November 30th due to "security reasons." While the agency isn't specific about what those concerns are, BES typically encrypts messages in such a way that an outside party can't (usually) intercept them in mid-flight. Most likely, Pakistan is worried that gangs and terrorists will use BlackBerry phones to chat in secret.