The dot means it's a thread you've posted in. Whenever a web page refuses to load, or locks up your browser, or crashes your system -- it's not the web page; it's almost always your browser. Birds gotta fly, fish swim, cats vomit -- browsers crash. Reloading the page might work; restarting your browser is often enough; if not then restart Windoze.
If the same page causes the same problem again after a cold start ... then you're probably using an old browser; it's time to update it. If a cold start fixes it, it doesn't count.
It isn't just one browser; they all crash. Newer versions aren't always upgrades ... the current version of Netscape sucks. The latest version of Explorer seems more stable than the last version ... a little bit. Maybe someday they'll design a web browser that's reliable, but I'm not holding my breath while I wait.