If you update PHP5, don't forget to re-compile "eAccelerator" or otherwise PHP will disable the extension.
I'm running automatic updates on several Ubuntu based servers and I replaced "eAccelerator" with APC (Alternative PHP Cache). It's much easier to install, the performance is great too and updates are done by APT. If you like to do the same follow these steps.
1. remove the eAccelerator settings from the php.ini file
2. reload the Apache service
3. Remove the .so file (check the file location inside the php.ini file)
4. remove the cache directory and eventually the installation files.
5. Install APC with "apt-get install php-apc".

That's all, I found this opcode cache performance comparision @stackoverflow.com

I noticed that file locations are very different for Ubuntu and CentOS.
I use this command to find for example "phpize"
$ sudo locate phpize

It's possible that you need to install "locate" first:
$ sudo apt-get install locate

Hi Richard,
I like your service, but i decided to not use your Wordpress hosting service. Why? first of all your company is based in Malaysia and second your hosting prices are only interesting if I buy a plan for more than a year in upfront. My own choice is a VPS (cloud based) from a company in USA or Europe where I\'m able to manage the server by myself. Of course for $20 / month with daily or monthly contract period.

Hello Dave, not only full featured, Wordpress has become a CMS which is very easy to use.