CSS IE Doubled Float-margin bug

The things we have to put up with as web developers just doesn't seem to end sometimes. I simply cannot stand IE, in just 3 days of solid development I've encountered 3 defined bugs in the browser. Ridiculus!

Anyways:

If IE is giving a bigger (doubled) side margin than it should
(e.g. - You have a margin of 100px on both the top and bottom of an element and it is obviously not the same..)