my Receipt Number is July 24,uscis process RTD Augest 1 2006 now,do I need call them?

I would not call them quite yet. I was in the same situation. The processing date was after my receipt date and the RTD arrived in just a few days. What does your case status say on-line?
 
Application Type: I131, APPLICATION FOR USCIS TRAVEL DOCUMENT

Current Status:

Your I131 APPLICATION FOR USCIS TRAVEL DOCUMENT was received on July 24, 2006. We will mail you a decision as soon as processing is complete. You can use our processing dates to estimate when this case will be done. Follow the the link below for current processing dates.
 
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