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In addition...RIM has released AppWorld version 126.96.36.199...it is highly recommended to be on that version.
Concerning the rejection of your PIN on the RIM sites, please return to these forums (http://supportforums.blackberry.com/rim/) and register an account so that we can provide you with direct assistance.
Occam's Razor nearly always applies when troubleshooting technology issues!
If anyone has been helpful to you, please show your appreciation by clicking the button inside of their post. Please click here and read, along with the threads to which it links, for helpful information to guide you as you proceed. I always recommend that you treat your BlackBerry like any other computing device, including using a regular backup schedule...click here for an article with instructions.