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Drawback:
The drawback of this method is that every page that's hit is seen by Apache as an error. Thus every hit creates another entry in your server error logs, which effectively destroys their usefulness. So if you use this method you sacrifice your error logs.[/]
it could be the way your apache config handles errors, Not every method will work on every configuration. As far as I have seen it there is actually no right way and is server dependent.