Mozilla (and therefore Netscape 6) is displaying the textarea text & box too big.
The fix for now, is to define the fontsize in the formboxes. That will give much better results. For example:
[:"red"] .formboxes {
font-family : courier new, courier, fixed, sans-serif;
[:"blue"] font-size : 12px; [/]
background-color : #F3F3F3;
color : black;
} [/]
I suggest adding font-size to all the stylesheets.

I have filed a
bug report about this in case you are interested.