how did you and your husband file? jointly or separately?
this is how it reads on the IRS site for those like me, married with two children...
6) Married couple with two children, AGI is $80,000, federal income tax liability before child tax credit exceeds $1,200.
Rebate is $1,200
Qualifying child credit is $600
TOTAL is $1,800
we did more than the AGI in this example, but it is less than the 150,000 which is where the "phaseout reduction" starts.
here's the link:
Economic Stimulus Payments Information Center
go to Stimulus Payment Scenarios toward the middle of the page and it will give you some idea of how they figuring these rebates.