Michael – it’s be great to support nginx out of the box but I don’t use it so I can’t test it. Perhaps a section of the readme if you’d like to contribute a patch?
Charlie, BlaKKJaKK – I don’t know why you’d get 403 errors. There’s nothing in the plugin to stop you accessing the site. Are you using Bad Behaviour or any other plugin to stop bots attacking your site such as WP-Ban?
Rishi – you’ll have to be clearer about your problem.
If you have support queries, can you post to the wp-super-cache forum instead? It’s easier to keep issues separate there.