First try holding the CTRL key down and hitting F5
This should clear your cache and force a page reload to establish a working connection.
If your still not getting the live feed:
Please select your browser type and confirm your Java setup.
INTERNET EXPLORER 5.5, 6.0 or higher:
1. Click Tools, then Internet Options
2. Click the Security Tab
3. Click 'Custom Level'
4. Under all scripting areas, make sure you have selected Enable.
5. Click Ok at the bottom of the screen
6. Restart your broswer.
NETSCAPE:
1. Click Edit then Preferences
2. In the Category area, select Advanced
3. Check Enable Native Object Script.
4. Click OK at the bottom of the screen.
5. Restart your browser.
NOTE:
Many who experience difficulty on the GameCenter page simply need to install the latest versions of Java and/or Flash to replace out-of-date, or corrupted versions on their PC.
To upgrade Java, Go to the link below, then click Begin Download, this will download the latest version and allow you to install it. Then restart your browser.
http://www.java.com/en/download/download_the_latest.jsp
Please note: If you have recently installed the latest version of Firefox, there are known conflicts between it and the lastest versions of Flash. The links below will direct you to software vendors suggested fixes to these issues.
Adobe Flash
Testing what Flash you have installed in your browser: Flash Version Detector
The release notes detail the fixes that have been made: Flash Release notes detail
AdobeFlash Player Download Center:Adobe Flash Download Center
Firefox Browser - Topics for review
Quicktime plugin takes over Flash
ActiveX plugin conflict
Illegal Operation In Plug-In
Adblock conflict
Flashblock conflict
Firefox Browser Fixes
Adblock Explained
Internet Explorer 4.0 users - Please upgrade to IE 6.0. The IE 4.0 browser does not fully support JavaScript and should be upgraded)
AOL users We do not recommend using AOL's browser for the Live GameCenter connection. Use AOL to connect to the Internet, but use IE 5.5 or higher or the latest version of Netscape once connected.