RewriteRule not working for one specific case - apache

Question

I'm banging my head on the wall with this one. I have a rewrite rule in my htaccess file which works for all urls but one. Here's the line
RewriteRule ^([a-zA-Z0-9_-]+)$ content.php?linkid=$1 [L]
And the complete htacess
<IfModule mod_rewrite.c>
Options +FollowSymlinks
RewriteEngine On
#RewriteRule ^contact-us content.php?linkid=contact-us [L,R]
RewriteRule ^([a-zA-Z0-9_-]+)$ content.php?linkid=$1 [L]
RewriteRule ^news/([a-zA-Z0-9_-]+)/([0-9]+)$ media.php?news=$1&pgNo=$2 [L]
RewriteRule ^news-details/([a-zA-Z0-9_-]+)$ media-detail.php?news_short=$1 [L]
RewriteRule ^services-list/([a-zA-Z0-9_-]+)$ services-list-new.php?services_list=$1 [L]
RewriteRule ^specialities/([a-zA-Z0-9_-]+)/([0-9]+)$ speciality-listing.php?speciality=$1&pgNo=$2 [L]
RewriteRule ^services-details/([a-zA-Z0-9_-]+)$ services.php?speciality_short=$1 [L]
RewriteRule ^treatment-detail/([a-zA-Z0-9_-]+)$ treatment-detail.php?treatment_short=$1 [L]
RewriteRule ^testimonial/([a-zA-Z0-9_-]+)/([0-9]+)$ testimonials.php?testimonial=$1&pgNo=$2 [L]
RewriteRule ^testimonial-detail/([a-zA-Z0-9_-]+)$ testimonial-detail.php?test_short=$1 [L]
RewriteRule ^photo-gallery-detail/([a-zA-Z0-9_-]+)$ photo-gallery-detail.php?photo_short=$1 [L]
RewriteRule ^media/([a-zA-Z0-9_-]+)/([0-9]+)$ media.php?media=$1&pgNo=$2 [L]
RewriteRule ^media-detail/([a-zA-Z0-9_-]+)$ media-detail.php?media_detail=$1 [L]
RewriteRule ^doctor-profile/([a-zA-Z0-9_-]+)$ doctor.php?doc_short=$1 [L]
RewriteRule ^make-an-appointment/([a-zA-Z0-9_-]+)$ make-an-appointmen.php?appointment_id=$1 [L]
RewriteRule ^current-openings/([a-zA-Z0-9_-]+)/([0-9]+)$ current-openings.php?current_opening=$1&pgNo=$2 [L]
</IfModule>
So this works for domain.com/privacy-policy which goes to domain.com/content.php?linkid=privacy-policy and a few others like testimonials, services, career etc
BUT, it doesn't work for contact-us, i.e. domain.com/contact-us
I've even tried the hard coded version above which is the commented line above. Any ideas guys?
EDIT:
I've tried using the url domain.com/content.php?linkid=contact-uswhich works correctly but domain.com/contact-us gives me the error The requested URL /contact-us was not found on this server..
I've also discovered another url that's not working and it is domain.com/media/list/1 which says The requested URL /media.html/list/1 was not found on this server. I don't know where it's getting media.html from. There was a file named media.html in the file structure so I removed that and the link started working. That's not the case with contact-us though.

Answer 1

Translating above comments into an answer as it might help someone with similar problems.
You need to disable MultiViews options to make it work.
So just change your Options line this:
Options +FollowSymlinks -MultiViews
Option MultiViews is used by Apache's content negotiation module that runs before mod_rewrite and makes Apache server match extensions of files. So if /file is the URL then Apache will serve /file.html.