I am using Paypal Website Payments Standard.
The orders are in my admin site and I do get an email from Paypal with payment details and address of customer etc.
I also am having this problem, no email sent but Paypal emailing me telling me that I have a payment, but what for?? I am having to email customers for their orders.
Very frustrating.
I can't seem to be able to see the discount codes in the order totals modules, I have double checked and all the files are in place, is there something I am missing?