网站在 linode 中不起作用

我在Linode上获得了新的托管计划，并在上面安装了Ubuntu 10.04 LTS，并在上面托管了我的网站。 我已经在 Codeigniter 中制作了我的网站，但是 linode 中的链接不起作用，我已经将我的网站上传到其他一些主机上并且它工作正常，但在 Linode 上它没有从一个页面导航到另一个页面。我不知道问题是什么。

这是我的HTASCESS文件的代码-->

<IfModule mod_rewrite.c>
    RewriteEngine On
    RewriteBase /
    #Removes access to the system folder by users.
    #Additionally this will allow you to create a System.php controller,
    #previously this would not have been possible.
    #'system' can be replaced if you have renamed your system folder.
    RewriteCond %{REQUEST_URI} ^system.*
    RewriteRule ^(.*)$ /index.php?/$1 [L]
    #When your application folder isn't in the system folder
    #This snippet prevents user access to the application folder
    #Submitted by: Fabdrol
    #Rename 'application' to your applications folder name.
    RewriteCond %{REQUEST_URI} ^application.*
    RewriteRule ^(.*)$ /index.php?/$1 [L]
    #Checks to see if the user is attempting to access a valid file,
    #such as an image or css document, if this isn't true it sends the
    #request to index.php
    RewriteCond %{REQUEST_FILENAME} !-f
    RewriteCond %{REQUEST_FILENAME} !-d
    RewriteRule ^(.*)$ index.php?/$1 [L]
</IfModule>
<IfModule !mod_rewrite.c>
    # If we don't have mod_rewrite installed, all 404's
    # can be sent to index.php, and everything works as normal.
    # Submitted by: ElliotHaughin
    ErrorDocument 404 /index.php
</IfModule> 

请任何人帮助我。

提前谢谢你。