I’ve been using Apache 1.3x for my web sites. Recently I upgraded one server to have Apache 2.0x. I had been using the “Options +Multiviews” feature to allow me to link to web pages without a file extension. For example, I link to /directoryname/something instead of /directoryname/something.html. This gives me flexibility if in the future I want to change my pages from .shtml to .php.
But the settings in Apache 2 have changed slightly. I had to add in “MultiviewsMatch Any” to my configuration file. I restarted Apache, and voila! It worked.