I'm using the latest version of Opera, v.8.54.7730, and am encountering a very strange problem with loading pages I have responded to, and sometimes have previously viewed. Initial views of a page are not having this problem. If I'm in "Identify as Opera" or "Identify as Mozilla" (using the F12 button), the pages work perfectly fine. However, if I am in "Identify as Internet Explorer" something very strange happens when I access a link.
The page will not display, and what will happen is that Opera is constantly requesting and downloading data from the forums. I let it run for about 10 mins and it downloaded over 3.2MB for a page before I just gave up. It will just keep going. These are not pages with images or such. They are simple text posts.
So for those that are experiencing this problem, you don't have to use I.E. (which is what I was doing as an initial workaround). Just hit F12, select "Identify as Opera", and you shouldn't have any other problems.
I'm not sure if this is a problem with Opera or the forum software. Don't know anything about that sort of architecture. Perhaps given that this is happening with what seems to be after a post is modified, it's related to Opera's cache. Or perhaps it's related to the way the forums respond to Opera spoofing I.E.