After a few hours use on a clean install, the location bar will have a variety of URLs in its cache. If I then type in a full URL including protocol (typing: http), the address bar overwrites my guess (deletes my first key stroke and replaces it with 'w') - then allows me to keep typing with the wrong address entered (end result is: wttp) 1) Visit several sites to generate a small cache of URLs 2) Type in http 3) Location bar tries to guess a site beginning with www 4) End result in location bar reads wttp The behaviour is repeatable and not consistent with previous versions of firefox, or any browser prior. Version: 8.0a2 (2011-08-21)

If this is a Regression, can you find a Range? http://harthur.github.com/mozregression/ I failed to repro :-/

I'll take a look at this in a few hours and report my findings back to you. I will also take a video capture of the behaviour in action too, along with a more complete overview of addons etc being used.