Arthur, this sounds like content you've created yes?
If it's content you're creating then I'll have to send you to Engineering via the Digital Publishing Center at
http://www.adobe.com/devnet/digitalpublishing/.
There's a feedback form on that page (we don't currently do any ebook dev support on this forum.. there might be a forum unique to that at some point in the future). It's not very clear, but if you send a dev question to that feedback form you should get an answer from engineering. This ONLY applies to questions about creating content for consumption in ADE 1.5.... (end user questions regarding ADE 1.5 still go through web case support at http://www.adobe.com/support/digitaleditions/)
Regards,
Bentley Wolfe
Senior Support Engineer, Flash/Flash Player/Digital Editions
Adobe