Guild Wars 2

I’ll have a look at my pc.
But I didn’t had the problem in the beginning.
Is it possible it shows up later?

I changed my password.

I didn’t had the problem with the lines and stuff in the beginning, it all started when I recieved that mail about an log in attempt in Japan. I have not installed any software or updates.

I tried what you just said, what might fix the problem with the lines and buildings, but they still appear
:(

here is a video of my problem
http://www.youtube.com/watch?v=AhXza-yaT6M

When I’m playing Guild Wars 2 I keep getting weird blue lines all over the screen, buildings to pop up and leave again…
It’s really weird, I think it has something to do with some mails that I have gotten. They said: Someone tried to log in to your account in Tokyo, Japan. My problem is I’ve never been to Japan and I live in The Netherlands.
Is it possible that people tried to hack my account? And is that maybe the reason why I get those weird blue lines and buildings to pop up? And is there a way to fix it?
It’s very annoying, but I want to keep playing because it’s such a good game.

Greetings from me