Another sign pointing to the fact we are still in the early day of this technology. Was this the blocksize forking event that was intended to increase blocksizes so that bitcoin can scale? Or was it a badly managed system upgrade?
6 July 04:00: A new fork occurred starting 5 July at 21:30 with three blocks before the valid chain again became the strongest chain. See the recently-added list of forks. Reports that the situation has past are not correct. Please continue to wait 30 more confirmations than you usually would wait before accepting a transaction. Which, for the bitcoin uninitiated, amounts to a wait of approximately five hours — just what you need when you’re trying to pay for a coffee at Starbucks.
http://ftalphaville.ft.com/2015/07/06/2133719/bitcoin-being-forked/