Please someone answer this question about ACT scores!?

So i'm applying to Cal Poly SLO and i was about to submit my application when and they told me that they have not received my ACT score. So i checked my ACT account to see if I sent the scores to Cal Poly SLO and I did. I took the ACT Writing in September 2010 and I have already received my scores maybe for a month now. I was wondering how long the the colleges I sent my scores to will receive them? I sent the scores when i signed up for the registration for the test. Any help?