It took about 11-14 days for schools to get my scores from the day scores were released in mid-October (August 2005 MCAT). I received 2 invites immediately after that and the rest in the following 4 weeks. Had 1 interview in December, 2 in November, 2 in January. Applied 5 schools.
Some schools send out secondaries before scores, some after scores, and some only if you are interviewed. Check on SDN for what the current secondary essays are and start working on them after you complete the August MCAT. Then cut and paste or print out when needed.
1- have your secondaries completed/prepped before MCAT scores come out.
2- Be sure that you are complete/verified at AACOMAS before scores come out. This means submitting your application by mid August with all transcripts already received.
3- verify you are complete at all schools in early November.
http://forums.studentdoctor.net/showthread.php?t=236958&highlight=August