tedster - 3:31 pm on May 5, 2011 (gmt 0)
Along these lines - Google Analytics just introduced a Site Speed report:
The new version of Google Analytics is currently available in beta to all Analytics users... This week we're sharing a new feature, the Site Speed report. With the Site Speed report you can measure the page load time across your site.
Uses for the Site Speed Report
Content: Which landing pages are slowest?
Traffic sources: Which campaigns correspond to faster page loads overall?
Visitor: How does page load time vary across geographies?
Technology: Does your site load faster or slower for different browsers?