Google has updated the behavior of the date range function in its [advanced search page][1] so that it now behaves as you'd expect -- finding pages that have been created within the selected date range.

Previously the date range function considered a page new each time it was re-indexed, meaning that despite the actual age of the page Google would include it in a date search if it had been re-index recently, making the feature worthless.

It might seem like a meaningless update, but this should be a huge boon for those looking to find the latest information on the web. 

[via [Google Operating System][2]]

[1]: http://www.google.com/advanced_search?hl=en "Google Advanced Search"
[2]: http://googlesystem.blogspot.com/2007/06/get-fresh-search-results-from-google.html "Get Fresh Search Results from Google"