PayPal has posted confirmation that they are catching up on a backlog of delayed IPNs starting around 4:19pm PDT this afternoon. Our system will continue to process sales automatically, including issuing download links, as soon as PayPal finally sends us the IPN confirming each buyer's payment, although this may be delayed due to the backlog.
If you have buyers who cannot wait, feel free to fulfill their sale manually by using your Seller Admin > Send Free Download Link. You may also wish to use your Seller Admin > Block Transactions feature to prevent another link being issued to them once their IPN does finally get sent to us.
(Live Site-890)  Notification - PayPal IPN Delay - Aug 19
08-19-2009 06:18 PM
PayPal_Updates PayPal_Updates Administrator writes...
 Resolved: This notification is to inform you that the following issue has been resolved as of Aug 19, 7:41 PM PDT (Aug 20, 3:41 AM BST).
(Sent Aug 19, 7:57 PM PDT by KD)
 Notification: This notification is to inform you of the following issue with IPN. IPNs are currently delayed.
(Sent Aug 19, 6:15 PM PDT by KD)
Service: Live Site
During the time listed below you may have or currently are experiencing the following:
Merchants using IPN for order management might experience some delay in receiving IPN's.
- Order Management (IPN / PDT)
Start Time: Aug 19, 4:19 PM PDT (Aug 20, 12:19 AM BST)
End Time: On-Going
Our technical teams are working diligently to resolve the issue. We will provide updates until the issue is resolved.
We apologize for any impact caused by this incident.
PayPal Merchant Technical Services
If you have questions, contact PayPal Merchant Technical Services by filing a ticket under contact support (refer to ID: Live Site-890) at https://www.paypal.com/mts/.