Disable "mobile phone" and "fax" from joomla contact information

I have a Joomla installation with a contacts form. Specifically, there are two contacts with position, email, name, phone. However, Joomla seems to insist on having two empty columns "Mobile phone" and "Fax" that I can't seem to get rid of. Neither contact has a mobile phone or fax, and they are disabled in b开发者_开发知识库oth sets of contact parameters?

What am I doing wrong?

Try to set "hide" for mobile phone and fax in your "Contacts" component instead of each contact.

Go to Components->Contacts->Contacts. Click on "Parameters" on component's toolbar and set everything to "hide".

Parameters for Contacts Component http://img248.imageshack.us/img248/8296/parameters.png

...and come back here and tell us if it worked. By the way, I use a component named QContacts that is more powerful than the official, including captcha support, custom fields, etc.