What happened with Coinbase

They launched with moon rockets saying they are the first insured exchange and now they are in gox mode

Their status page shows they had an exchange system outage today, but that it's resolved now. They don't say what went wrong and I hope it stays online now they have it running again. Off time can damage an exchange's reputation like nothing else except a hack.
https://status.coinbase.com/
Quote
Past Incidents
Jul 2, 2015
Exchange outage
Resolved - Exchange is up and 100% healthy.
Jul 2, 15:17 PDT
Update - Engineering are making progress towards a fix. Coinbase Exchange still experiencing a partial outage affecting BTC-USD order book.
Jul 2, 14:59 PDT
Update - Engineering are making progress towards a fix. Coinbase Exchange still experiencing a partial outage.
BTC-USD - offline
BTC-EUR - online
BTC-GBP - online
Jul 2, 14:42 PDT
Update - Engineering still working on a fix for the partial Coinbase Exchange outage.
BTC-USD - offline
BTC-EUR - online
BTC-GBP - online
Jul 2, 14:16 PDT
Update - Engineering is still working on a fix for the partial Exchange outage.
BTC-USD - offline
BTC-EUR - online
BTC-GBP - online
Jul 2, 13:56 PDT
Update - The engineering team is working on a fix for the partial Exchange outage. BTC-USD order book is offline, BTC-GBP and BTC-EUR order books are online.
Jul 2, 13:45 PDT
Update - The engineering team is working on a fix for the Exchange outage.
Jul 2, 13:25 PDT
Update - The engineering team is still working on a fix for the Exchange outage.
Jul 2, 13:05 PDT
Identified - We have identified the issue with the Exchange and are working on a fix.
Jul 2, 12:54 PDT
Investigating - We are currently investigating.
Jul 2, 12:43 PDT
Jul 2, 2015
Exchange outage
Resolved - Exchange is up and 100% healthy.
Jul 2, 15:17 PDT
Update - Engineering are making progress towards a fix. Coinbase Exchange still experiencing a partial outage affecting BTC-USD order book.
Jul 2, 14:59 PDT
Update - Engineering are making progress towards a fix. Coinbase Exchange still experiencing a partial outage.
BTC-USD - offline
BTC-EUR - online
BTC-GBP - online
Jul 2, 14:42 PDT
Update - Engineering still working on a fix for the partial Coinbase Exchange outage.
BTC-USD - offline
BTC-EUR - online
BTC-GBP - online
Jul 2, 14:16 PDT
Update - Engineering is still working on a fix for the partial Exchange outage.
BTC-USD - offline
BTC-EUR - online
BTC-GBP - online
Jul 2, 13:56 PDT
Update - The engineering team is working on a fix for the partial Exchange outage. BTC-USD order book is offline, BTC-GBP and BTC-EUR order books are online.
Jul 2, 13:45 PDT
Update - The engineering team is working on a fix for the Exchange outage.
Jul 2, 13:25 PDT
Update - The engineering team is still working on a fix for the Exchange outage.
Jul 2, 13:05 PDT
Identified - We have identified the issue with the Exchange and are working on a fix.
Jul 2, 12:54 PDT
Investigating - We are currently investigating.
Jul 2, 12:43 PDT