Drupal xml parsing errors

I see from forum posts that Dreamhost is having xml parsing problems under PHP5.
I am wondering if this is also the case for PHP4 as I am getting xml parsing errors when trying to set up a RSS feed under Drupal 4.6.3.
Anyone found a fix for this?

Managed to solve the Drupal xml parsing problem
An obscure error message implied that XML encoding should be UTF-8
Changing the RSS xml header did the trick