observation: a minor Firefox improvement
 

I used to be annoyed by a minor problem in Firefox: in the URL bar, if I tried to highlight one word or section in the URL (to erase it) by using Ctrl + Shift + Right or Left, Firefox would always highlight the entire URL. I just noticed that this has been fixed. I'm not sure how recently, though.

You can check the firefox release notes: http://www.mozilla.com/en-US/firefox/releases/ and see the complete lists of fixed bugs. In release 3.0.7, using Ctrl-Shift-Right (or Left) highlight one word at every click, being the word separated by punctuation (slashes, hyphen, dots...).