IRS delay on returns this year?

If I had a child care credit that I used a deduction on this years taxes, efiled on Feb 4th, but have yet to receive the confirmation of the IRS accepting my return.....is this what the whole delay of returns would apply to? Also I wonder if it could be due to overdue payments for my child's disability. I called the 800 number to double check that I do not owe them money and confirmed I didn't. Arrangements have also been made for the repayment of my son's disability since he still has parts of it.