I have just destroyed the database at a WP experimental site and tried again using Chris Meller's script to convert from Habari to Wordpress.
Although the output of the script didn't reach my browser checking out the dashboard of at the WP site afterwards I think the conversion was successful.
Got a little problem with Tinyau's Tag Cloud plugin after allowing the /user/cache/ folder to be writable. Now it's solved by clearing the old cache in that folder.
I have also moved Karen's and Because I Learn to this new LEMP server. During the WP WXR import I had to change post_max_size and memory_limit in addition to upload_max_filesize in /etc/php5/cgi/php.ini or else I'll get Allowed memory size of 33554432 bytes exhausted error from WP.
I first tried Nginx back in November last year when I entered the world of VPS. The first ride wasn't smooth as I couldn't get php to work with Nginx.
I recently tried installing the Linux Nginx (Often called Engine X) Mysql and PHP, or the LEMP stack, again and this time I finally cracked it. My little experience is recorded here. I also recorded how to install phpmyadmin which is useful if I have to transfer database between servers.
Now I'll have to test out how I could move database across after that I'll decide if LEMP would be better for my use. My sites currently are of low traffic consuming only about 2G per month but I could see this number growing.