I'm basically just blowing off steam, here. Figured some others may want to join.

4 hours ago I was trying to complete a 1.5 BTC transaction with another party from my Coinbase app which has built in wallets. Oddly, I got an error message saying error, it could not be sent. So I tried again. No luck so I scrounged up 1.5 BTC I luckily stored on another mobile wallet (risky stuff, I know). Well, 3 hours later I open Coinbase and see two 1.5 pending transactions had just started, destined for the same address from earlier. I'm hoping the other party is honest enough to return it. Hmmm.

I get worried when basic software makes such huge mistakes like this and inothers in Coinbase's app.