Ok it\'s 19 Jan 2013 22:30 NZST and most of the internet seems to have come to a crawl as Google Analytics seems to be running really slow. Stackoverflow, Firefox.com, reddi
You could host a copy of www.google-analytics.com/ga.js on your own server and load it from there. If you do go that route, I'd set up a cron job to periodically fetch ga.js to make sure you've got the most recent version.
Regarding tracking code placement: one of the main reasons for placing the tracking code earlier in the page (before ) has to do with visitors who leave the page quickly (possibly before the entire page has rendered). In that case, you're more likely to collect some data the sooner your tracking code is executed.