I've got a very similar situation here as well, except I did get an email notification.
For those that contacted coinbase support, how long did it take for them to respond? It has been 2 days since I've sent my email to them and I haven't heard anything back.
Olaf are you still around? I'm unable to send a message to you directly as my account doesn't allow it yet.
Here is how my transaction looks like:
http://i.imgur.com/SCk33ii.jpgI am starting to get worried.