We won't read too much into this, but it comes at an interesting time -- with only a month left before RIM is expected to debut the BlackBerry PlayBook tablet, the company's chief marketing officer has resigned. The Wall Street Journal reported that RIM CMO Keith Pardy (formerly with Nokia) will leave due to "personal reasons" after a six-month transition period is up. The publication's anonymous sources add that Pardy actually made the decision a month ago, and that the more "reflects larger turmoil" within RIM. To be frank, we're a little worried about the fate of the PlayBook if it's indeed close to launch -- when we tried it at the Game Developer's Conference this past week in San Francisco, the hardw
