When logged in, the site uses HTTPS. Most browsers try to get you not to mix HTTP and HTTPS content, and in that scenario, things like the Google maps don't show and you get JavaScript errors like:
Webpage error details
User Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; WOW64; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; InfoPath.3; .NET CLR 4.0.20506) Timestamp: Tue, 8 Sep 2009 11:20:17 UTC
Message: 'GClientGeocoder' is undefined Line: 289 Char: 3 Code: 0 URI: https://www.ohloh.net/javascripts/main.js?1251390470