Airportibo - 2:56 pm on Sep 3, 2004 (gmt 0)
I think that's one of those "urban legends" that somone posted in a forum one day and now its still spreading around from time to time.
It is true, that Google only saves the URL for some pages, but generally that's not because they cannot index the page, it's because they don't want to. E.g. because it's a dynamic page with tons of cgi-parameters.