User streaming - error 420



yesterday I started seeing this problem with my Android app, and a lot of my users are reporting the same issue, where their timeline is not refreshing.
I’m using the user streaming API and this is what the server is throwing:

420:Returned by the Search and Trends API when you are being rate limited (
Returned by the Streaming API:
Too many login attempts in a short period of time.
Running too many copies of the same application authenticating with the same account name.
Exceeded connection limit for user

I see in the API status dashboard that the userstream service is having serious problems, can that be causing this?