I waited nearly 24 hours for my latest transaction to complete and my balance is currently missing 4BTC for no apparent reason. When you are dealing with people's money I think support is extremely important and they are doing a horrible job of communicating what is going on!?
My account is still 4 BTC short and nobody from Coinbase has responded to me via e-mail or twitter.
I am sorry about those having delays at Coinbase, but I think that if Coinbase is having scaling, e.g. upgrade, issues, then that bodes well as an indication of the growth of the bitcoin economy.
I like that I can buy btc there, but I immediately move my coins to blockchain after purchase - coinbase is improving but they are not nearly there yet
This is why you don't put your money in a site like this.