Thanks for contacting us about your check. I'll be happy to give you more information on reissuing checks. I understand that you're concerned that your check may have been stolen, but unfortunately I can't reissue your check until after October 25.
For additional questions, I'd encourage you to visit the AdSense Help Center (http://www.google.com/adsense_help), our complete resource center for all AdSense topics. Alternatively, feel free to post your question on the forum just for AdSense publishers: the AdSense Help Group (http://groups.google.com/group/adsense-help).