I have searched the forum and this problem was last noticed by some folks with WordPress 2.x edition like four years ago.
I just moved to a new server and this problem is happening on it alone.
It has APC Cache enabled. I am running a caching plugin on one of the blogs but apparently the problem is universal. because it's happening on all blogs whether they are running caching plugin or not.
I have googled around and i dont think apc cache hampers wordpress cache plugins. though you never know.
I publish a post. 20% of the times, it would take me to a 404 page on the site with address bar showing post.php link. Around 80% of these redirects would still publish the post properly. rest of the times, the post is not published at all.
This is becoming a major annoyance. Can anyone point out to the source of the problem?