Have you had a letter posted about the cast changes.  We would love to hear about it if you have.  Below is list of where we've found them.

• SFX Magazine - Two New Letters in issue #159 Posted (19/07/07)
• Sci-Fi Website - New Letter posted (06/07/07)
• Sci-Fi Website - New Letter posted (04/07/07)
• Sci-Fi Website - New Letter posted (16/04/07)
• Sci-Fi Website - New Letter posted (27/03/07)
• Sci-Fi Website - New Letter posted (16/03/07)
• Starburst Magazine - Issue 348: Cast Changes letter posted (15/03/07)
• Sci-Fi website - New letter posted (14/03/07) 
• TV Zone Magazine - Issue 213: 2 letters posted in the Readers' Forum (07/03/07)
• Sci-Fi website - A number of letters have already been posted on there, the latest being March 5th, 07 (07/03/07)