[rimantas]

  > If you're constantly pulling content from 4-5 different
  > domains, perhaps you should re-think your sites
  > architecture to minimize that.

And if you are not you may be interested in doing that — browsers have limited number of connections per domain so splitting your assets across 2-4 domains allows to download more resources in parallel.

http://developer.yahoo.com/performance/rules.html#split

[fotbr]

Or, simplify your pages. The current direction of web development and design -- having hundreds or even thousands (yes, thousands) of assets in a single page is often counter productive, and borderline stupid.