I posted this on the thread about funny requirements, but seems relevant here:

Quote - Something else I've noticed is that I seem to be getting someone else's wishlist in the store view (such as here if you are logged in). Also, yesterday it had a link "Not <some guy's name>?" at the top, like I was logged into someone else's account, and it had his (huge) wishlist on the page. Fortunately when I went to my account details it was my account. I also bought my order twice (luckily only about $7) because the final page of the order confirmation didn't come up, and I didn't get an email. Of course, like an idiot, I went through the order again. Still no order confirmation but some time later I got two emails and the order was in my downloads twice. Zendesk isn't working so I can't report this, but it's not a huge deal—I can wait.

The notification emails didn't take that long (afraid I can't remember) but longer than usual. (I should have known better than to try the order again.)