Why so many people ? The most used client by exchanges as well ! will need to revert to a certain block . So no geth transactions are safe until another emergency update . Then , after the update , all the transactions need to be manually ~~ issued again ~~ compared with the chain state in order to find out which ones went through . As a user , I ' m slightly pissed . As an investor , I ' m frustrated by the too many confidence shakes in a row in the last months . I can ' t even grasp how disheartening it must be for exchange admins right now . As a suggestion to devs for future geth or any other clients ' implementations if you don ' t have it already , find a way to reissue all the transactions that will be missed because of the forced block rollback . Edit changed to reflect the fact that most transactions will be broadcast by Parity anyway