.htaccess problem

[eluser]Gaetan81[/eluser]
hello,

I recently started to use codeigniter. I must say its a great framework!

Still I have some problems with my .htaccess

Code:

RewriteEngine On

# Add www
    RewriteCond %{HTTP_HOST} ^myurl\.com$ [NC]    
    RewriteRule ^(.*)$ http://www.myurl.com/$1 [L,R=301]

# Add Trailing Slash  
    RewriteCond %{REQUEST_FILENAME} !-f
    RewriteCond %{REQUEST_URI} !(.*)/$
    RewriteRule ^(.*)$ http://www.myurl.com/$1/$2 [R=301,L]

    RewriteRule ^(/?)$ /index.php
    RewriteRule ^([a-z]+)(/?)$ index.php/$1

when I go to myurl.com/users/ everything just works fine. But when I add for example myurl.com/users/edit/25 he doesnt find the page.

Whats wrong to my .htaccess?

Tia