Why do the numbers between my Eloqua form and WebEx not match?

Hi Topliners,

I have a form hosted on Eloqua that registers people into WebEx when they submit it.
However, for some reason, the number of registrants between the two don't match even remotely.

I have 100 form submissions with no duplicates, 30 in the hold step for after they run through the connector in the campaign, and another 60 in WebEx.

Anyone have any thoughts or ideas as to what would cause this?

Thanks,

Brian