I just received the email from USCIS. The message is as follows:
Application Type: I140 , IMMIGRANT PETITION FOR ALIEN WORKER
Current Status:
This case has been approved. On July 20, 2006, an approval notice was mailed. If 30 days have passed and you have not received this notice, you may wish to verify or update your address. To update your address, please speak to an Immigration Information Officer during business hours.
If you have questions or concerns about your application or the case status results listed above, or if you have not received a decision or advice from USCIS within the projected processing time frame*, please contact the National Customer Service Center.