A few first quick things to try to cover the basics when a page halts in the middle of loading for a long time:
- Try a different browser
- Clear the browser cache. Also less likely but if you cache is on a device that is currently inaccessible this could be the issue.
- Restart your PC
I know these basics just sound like the standard support line -- but even the top developers at Stack Overflow go thourgh these steps.
Still Have the problem?
To accomplish this I would recommend the FireBug plugin for Firefox. Once you have installed this addon you can bring it up by clicking the bug icon in the lower right. Then click the Net tab. After this, you can reload the page and the timeline will hopefully show you were it is halting:
From there if you notice it is having a trouble on a certain point you might just want to report that back to us with a screen shot. If you can see that it is a different domain name that the page is halting on, it would help to go through the troubleshooting steps at How do I diagnose not being able to reach a specific website as an end user? and report those as well. (Ctrl-Shift-I) can bring up a similar tool but it is a little more detailed so I would recommend firebug.