I'm seeing an odd issue I can't quite identify using wp-super-cache 0.5.3 and WordPress 2.3.2 on CentOS/Apache 1.3.
If I enable compression I get a 403 if the client has Accept-Encoding: gzip enabled. If they do not accept gzip, the page serves up as expected. I've tested this with web-sniffer.net as well.
Anyone else see this?