Speedie

I was having this problem and found somewhat of a fix. Google does a lousy job of detecting the content encoding, but if you log into your Google Base account and tell it that the feed encoding is UTF-8 rather than having it autodetect, the majority of problems disappear.

I should add that this happens only if I don't continue back to the store, in other words I complete the payment but then close the browser. The order status is updated, so the IPN is definitely being received and processed. However inventory is not updated, emails aren't sent etc. IOW anything that's done by the functions in paypal_ipn.php doesn't happen. This is no great surprise as I don't see an include for that file or a call to any of its functions. Does this module not, in fact, currently do anything if the customer doesn't return to the site?

Exactly the same problem here, neither the store nor the customer receives an email, did you find any resolution to this? I've looked through the file that the IPN notification hits (ipn.php) and don't see anywhere where it calls a function to send any emails apart from the debug email?