Title says it all, tried to look at my portfolio on Coinbase just now and what a surprise:

Investigating Latency

We're investigating latency on Coinbase.com and the mobile app and difficulty with trades / payments. Our teams are working to restore full service ASAP.

Interesting that the exchanges never go down when the market crashes. When that happens and everyone scrambles online to try and paperhand sell their crypto in a race to the bottom they seem to always work impeccably.

However, the markets suddenly surge over 10% and they suddenly just cannot handle the bandwidth. Almost as if they had significantly too little crypto in their reserves and a sudden price hike would mean they didn't have the time to increase their reserves. Almost as if they were expecting the market to drop further and that gamble didn't pay off so better bring out the ol 'we're experiencing technical difficulty please stand by.'

Of course perhaps it's all a giant coincidence it happens every time....