Since the update yesterday I have found my client crashing at various times when playing pvp matches. It has happened at the beginning, end and during a match. My machine crashes to desktop and then the login screen appears for me to log back into the game with. It does not crash when waiting or queuing in the Heart of the Mists. Just when I click accept to go into a match.
Before the April 14th patch I never had this problem. PVE and WvW works fine.