Greed update: Hope this helps
I have only been able to reproduce the problem once. Watching the logs, I noticed that the problem appeared when Greed was prevented from logging in, but I had already accounted for that situation several months ago. In my case, Greed did what it was supposed to do: That is, throw away its stored credentials and re-authenticate. After that, I didn't see the problem agian.
Judging by the e-mails I've been getting (and the new low ratings Greed is getting on the market), this isn't working for everyone.
So the update I just posted is a bit of a shot in the dark. It contains a workaround for the authentication. It should always login at startup using fresh credentials, which should prevent the problem I saw earlier today from happening.