Did you know that each field you post using the HTML form element is limited to 100KB? I sure didn't and it can cause trouble if you still have to deal with Commerce Server 2000 and 2002 because the Bizdesk rely heavily on XML islands on the client to create a rich client side experience.
Specifically this can cause trouble when you add a large number of variants to a product all at once. You can work around it by creating a limited number of variants at a time.
PRB: Error "Request Object, ASP 0107 (0x80004005)" When You Post a Form
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my employer's view in any way.