font-face in firefox 8 on linux and firefox 3.6 on winxp

Question

this is my CSS code:

@font-face {
    font-family: 'WebMitra';
    font-style: normal !important;
    font-weight: normal !important;
    src: url('./fonts/bmitra.ttf') format('truetype');
}

@font-face {
    font-family: 'WebMitraBold';
    font-style: normal !important;
    font-weight: bold !important;
    src: url('./fonts/bmitra-b.ttf') format('truetype');
}

and this is my result in two version of Firefox in two operating system. i want know the bug is for Firefox or operating system.

Firefox 8 on Ubuntu 11.04

See problem Persian font separate with each letter.

Firefox 3.6 on Windowx XP

Correct version

This is live version you can test it.

Answer 1

The general consensus in the #firefox channel at irc.freenode.net is the Linux font rendering. It will never be Microsoft's rendering, so...