Remove duplicate messages, automatically clear errors if transient problem passes

Title says it all.  Here's a picture of those duplicate messages, that are now gone (and even better--properly parsed)

@jamalex I will merge this directly, so you can test for Nalanda tomorrow.

![screen shot 2013-11-10 at 6 35 15 pm](https://f.cloud.github.com/assets/4072455/1510463/794bc0b4-4a82-11e3-926a-e6d7013afb82.png)