Comment titles - are they removable?

I'm guessing this may have been asked before but I have a hard time finding stuff on Drupal.org - so I'm just gonna ask. Don't hate me.

Should be a simple thing... maybe... but how do you stop displaying the titles of comments? I have turned the option off for users to give their comments a title but Drupal interprets this to mean that I want the first few words of a comment to become a title.

For my money, having titles really breaks the flow of reading all the comments (this is why I'm also considering binning the option of users having signatures.)

Anyway - does anyone know how to get rid of the comment titles??

I'm using Drupal 5.7 and Garland theme.