rem: prefClearCache(nsINetDataCacheManager.FILE_CACHE | nsINetDataCacheManager.FLAT_CACHE); 
add: prefClearCache(Components.interfaces.nsICache.STORE_ON_DISK); 
context: function prefClearDiskCache(){  prefClearCache(nsINetDataCacheManager.FILE_CACHE |                 nsINetDataCacheManager.FLAT_CACHE);}
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/525851d1cf5302dd39bc97896ce9e6fa0ae81df7/pref-cache.js/clean/xpfe/components/prefwindow/resources/content/pref-cache.js