I am seeing the same problem on a brand new install with AIX 6.1, Websphere 7 and LCES3 SP1.Did you ever get this resolved? Did you open a case with Adobe?
1. Add a button to your form.2. On the Object Palette, switch the type to "Submit".3. On the Submit tab, enter "mailto:email@example.com" (or your own address) as the email address.4. On the Submit tab, switch the submission type to PDF.
I am not sure if you mean the regular download site or the EDS site. If you mean the regular one, you may want to post in the forum dedicated to download problems: Downloads
The issue was resolved by a restart. The current theory is that due to some DNS caching the endpoint was checking the empty mailbox on the old mailserver instead of the the full mailbox on the new server.