I've had a few problems too when I tried to open a few pages quickly in tabs. I just kept getting the spinning cycle and nothing showing on most of the pages. The first time it happened, I thought I had some nasty download attacking me. I disconnected from the net and did a scan of the puter.

After the second and third times, it was clear it was the forum. Haven't had it happen lately though. The times it did happen were about 2 weeks ago.