The latest build of the Mozilla project browser is released (version 0.9.7) and included, among many other improvements, on the What’s New list is the following:

• If you type into the URL bar while a page is loading, your text is no longer overwritten when the page load completes. (Bug 15050)

This might not sound like a big deal, but it is the little touches like this that make software feel cruel or friendly to the end user. It’s also features like this that aren’t apparent while you’re building the software – but when you’re using the software.