Note to self... when using <location> tags in your web.config file, like so:

<location path="SomeFile.aspx">
	<system.web>
		<authorization>
			<allow users="*"/>
		</authorization>
	</system.web>
</location>

DO NOT use root-relative paths (AKA "tilde" paths) to specify the path attribute value... otherwise you spend several hours trying to figure out why your location-specific configuration overrides aren't being honored at runtime.

Or so I've heard. <sigh>