Hi Abalieno,
you probably need to tweak your input formats. Go to administer -> input formats, and either turn off line break converter for the format you use, or create a new format with line break converter turned off.
Cheers!
Quoting Abalieno abalieno@cesspit.net:
The <pre> tag doesn't allow to have format tags like <br> or <p> but Drupal keeps adding them to the text I insert in a block. There's a way to prevent Drupal to add those tags and leave what's within a
<pre> block untouched? -HRose / Abalieno -- [ Drupal support list | http://lists.drupal.org/ ]