This is obviously aimed at people who suffered after what happened this morning on HUKD and please forgive me if this isn't 100% accurate, I just typed it up from what how my browsers seem to work:
Control Panel > Internet Options/Properties > General > delete files, tick delete offline content, ok
Tools > clear private data > tick cache only > press "clear private data now"
Edit > preferences > advanced > cache > clear cache
Tools > preferences > advanced > history > memory cache: empty now
Feel free to add your own or correct me if I'm wrong or any other tips welcome etc, thanks.