Hello all,
First just let me say I'm sorry for the trouble in the past few weeks. We indeed had a bunch of transactions go unconfirmed on the blockchain. This was due to a feature we attempted to roll out that paid transaction fees on the user's behalf (which created some unconfirmed transaction chains).
We did some testing, and thought we had it down. Obviously we were wrong. That was my fault.
We've rolled it back for now so things appear to be back to normal. I'm the first to admit we're still getting things "production ready" on Coinbase, so we won't come out of beta until we can safely say it's production ready. We don't expect to earn your business unless we can execute on this and much more. Thanks for bearing with us - we're in this thing for the long haul.
Two words...
Bitcoin testnetEdit: Keep up the good work guys