I've installed WP-Cache 2.1.1 and with WordPress 2.1 and greater (actually I've the latest version 2.2.3) I've a very particular problem.
In fact when a logged user (like admin, my blog doesn't allow registrations) post a new comment the public cached page of the comment is updated and the comment appears but the same cached page of the user isn't updated and the comment isn't visible to that user but in the public page is it visible.
I'm on Dreamhost with PHP 5.2.3 and MySQL 5 with eAccelerator and WordPress 2.2.3.
The blog is http://www.davidesalerno.net
Thanks a lot to all,