WP Super Cache 0.9.9.2 has just been released! This version is said work with WordPress 3.0 and adds a number of new features and bug fixes including:
Cache Preloading will cache every post on your site.
A cache tester that will check if your homepage is cached.
Much better support for mobile plugins.
Mod rewrite rules can now be updated from within the admin page.
Lots and lots of bugs fixed.
WP Super Cache is a static caching plugin for WordPress. It generates html files that are served directly by Apache without processing comparatively heavy PHP scripts. By using this plugin you will speed up your WordPress blog significantly.
Plugin homepage: http://ocaoimh.ie/wp-super-cache/