When you have multiple W-2's you have to add the amounts in the separate boxes of all W-2's and use those totals for each box in figuring out what's going on. I've seen numerous occassions where the amounts are correct on individual W-2's. But when you total up the boxes across all W-2's the amount of total SS withheld among all W'2" is to much for the total of box 1,3 and 5 across all W-2's.
