After several months with Pivotlog as my blogging software, I defected to WordPress. My hands were a bit tied because the people who provide the shared server were complaining that it was running excessively high CPU figures- around 52%. So three hours with WordPress then I found the import from Pivotlog addin and it was a very smooth transition.

Pivotlog was possibly always going to be a potential time bomb because it used flat files whereas Wordpress uses MySQL.