I had that problem after the site shutdown. It would flash or blink and lock up. Haven't had that happen in a while. I just assumed it was a bug from when the site shutdown.
Every time you click on this site and or any page or post you click on after that hit the "refresh" button at the very top of your screen before you click on anything. Mine is a small circle with an arrow. It's a common Forum glitch. As soon as you open this Forum hit the "refresh" icon.
Edited this because the above was rather confusing. As soon as you open this Forum and the page has loaded hit the refresh button. Dang! I can't describe what I'm trying to post. So, if something ain't right hit the refresh button.