I’ve been having the same problem. I’ve played since headstart weekend, almost always in WvW. I had little problems until the last patch. Then I started having problems with the game not responding, serious error notifications and directed to the GW website that says it has detected a problem in my system.
It could be a problem on my end. I certainly wouldn’t rule it out. But it is only with GW2 it seems. After the last patch, I downloaded the newest video drivers, cleaned up my registry and old drivers and repaired, several times. Then I didn’t have any problems.
Until tonight. Now I can not log in even with repair. I have done the Game Advisor as recommended by Ashley. I just need to send the report. Open a ticket for that?