Description of Problem:

Netscape input fields do not show iso-8859-1 special characters (such as the
Finnish umlaut characters dve) properly if the jpfonts are installed and the
input field font-face is sans-serif (mapped to helvetica). Also normal us-ascii
characters are shown with very wide spacing.

The problem arises from the bad /usr/share/fonts/ja/TrueType/fonts.alias file.
In this file, there
are rows that make aliases for character set 8859-1 althought the fonts contain
only ascii (7-bit) characters and are missing the the western european
characters defined in 8859-1 specification (see man iso-8859-1).

For my setup the fix was to remove all aliases for the 8859-1 character set from
the fonts.alias, i.e. todo 

grep -v 8859-1 fonts.alias > fonts.alias