Troubles with URI class

[eluser]jakelehner[/eluser]
Ok ... I found my first problem. My route was wrong. I changed it to:

$route['user/(:any)'] = "user/index/$1";

and it *almost* works ...

now if I go in to the URI library and comment out the block of code that does the caching:

Code:

if (isset($this->keyval[$n]))
  {
   return $this->keyval[$n];
  }

it works ... but if I leave the cache block in, it does not.

Any ideas?