I'm running WP 2.8.6 and I have my WP-cache installed and enabled. I have installed WP-cache from http://wordpress.org/extend/plugins/wp-cache/installation/ yesterday and its version is 2.1.2 I suppose (well what I actually did was to install WP-cache when my WP version was 2.8 and then upgrade the WP to 2.8.6 automatically).
My problem is that I or anybody else cannot post comments anymore. For example if you visit
and try to post a comment the system waits a little bit, the URL becomes http://ileriseviye.org/blog/wp-comments-post.php and then nothing but a blank white web page appears!
I even tried disabling WP-cache but nothing changed in terms of broken comment functionality.
Any ideas about what may be going wrong?