phpThumb creates a lot of 0KB temp files in cache folder
===

For some reason phpThumb is creating a bunch of 0KB files in my cache folder, the files look like `phpThumb{hash}` and I'm using the following config options:

    $PHPTHUMB_CONFIG['document_root'] = '/path/to/my/httpdocs/';
    $PHPTHUMB_CONFIG['cache_directory'] = dirname(__FILE__).'/cache/';
    $PHPTHUMB_CONFIG['cache_disable_warning'] = false; 
    $PHPTHUMB_CONFIG['cache_directory_depth'] = 2; 
    $PHPTHUMB_CONFIG['cache_maxage'] = 86400 * 30;
    $PHPTHUMB_CONFIG['cache_maxsize'] = 10 * 1024 * 1024;
    $PHPTHUMB_CONFIG['cache_maxfiles'] = 200;

The actual settings look fine since the cached images are getting stored and deleted when needed, I'm not sure what are the 0kb files for. My cache folder permissions are also set as 777.

Thanks in advance!