Mortgage interest not counting towards deductions

For some reason, when I enter my mortgage interest information from my 1098 forms, it doesn't seem to count towards my deductions.  My interest paid should push me well past the standard deduction.  The software gives no indication of why it's not counting it, but if I force it to use my itemized deductions against its recommendation, I can see it has 0 for my mortgage interest, even though I've entered the data.  Help!!