Changing Blog Software, alternatives to Drupal, Drupal to WordPress

OK – this blog runs in Drupal. It’s a reasonably old version of Drupal, and needs upgrading to allow spam filters and other features to be added in.

However, the recent server down time has thrown up a new question… should it stay in Drupal?

What alternatives are there and how easy is it to move from Drupal to a different blog software?

I’ll be looking at alternatives over the next month or so, but any suggestions or comments to get me heading along the right track are warmly welcomed. I’ll start off by looking at WordPress… anyone seen any Drupal to WordPress conversions?