I am using Drupal 6 and I am somewhat new to it.

I've been running into a strange behavior.

I have created a new Content Type that have 4 new fields and when I try to make a new Content using this Content Type everything is saved except for the new fields.

Each times that I save the Content the new fields comes out as empty.

I have been looking on search engines without luck, is it a known behavior, is it a bug or is could it be a mismanipulation?

What should I be checking to debug this situation?

The additional fields in question:

Label                     Name                      Type
========================================================
Product Subtitle          field_subtitle            Text
Product Overview          field_overview            Text
Product Features          field_features            Text
Product Specifications    field_n_specifications    Text

These were defined using the UI at: /admin/content/node-type/[content-type-name]/fields