The next version of WP Super Cache will be released next week. If you use the dynamic cache functionality you'll want to prepare.
Support for the mfunc/mclude/dynamic-cached-content tags will be removed.
In their place is a filter called wpsc_cachedata. You can use a WP Super Cache plugin to hook on to that and add or change template tags. It's a lot safer than running exec() on potentially unknown code.
Download the development version of the plugin on a test server and upgrade your theme if you need to show dynamic content on your site.
There's more information here, including test code: http://ocaoimh.ie/y/5b