I have been trying to come up with something helpful here, but...
The deadline was December 1st for the BA/MD program. You have been having server problems for 41 days? The application is not available because the application period has closed. Your only option is to contact the person who told you it was "okay" to submit your application more than a month late.
The regular application period (for regular admissions, not BA/MD) ends tomorrow, January 11, 2010. You can still submit that application online or print the pdf Freshmen - USC Undergraduate Admission
(Candidates for the BA/MD program will be receiving their letters of admission in the next two to three weeks... have you already sent all the other required application materials - test scores, recommendations, transcripts...???)