CakePHP webroot not accessible on new Apache setup

I've just set up a new Ubuntu 10.4 slice on Slicehost, and have installed apache, mysql and php. I've uploaded my CakePHP app and everything is running fine, except for the webroot being inaccessible. I have tried adding AllowOverride to all in /etc/apache2/sites-available/default and followed the Cake instructions to httpd.conf by adding

<Directory />
Options FollowSymLinks
AllowOverride All
Order deny,allow
Deny from all</Directory>

However, this is still not redirecting properly. I've hacked the css script tags to point to /app/webroot/css but would r开发者_如何学编程eally like to know how to solve this issue properly. Any help would be much appreciated, this is the first time for me to setup a new slice, so apologies for the noobish question

For me this sounds like mod_rewrite problem. Could you check if you enabled your mod_rewrite in apache configuration?