Basically as Firefox exists at the mo it lacks the inability to format text in character sets other than US-ASCII, base 9, and this is where the problem exists. IE however sees the text as standard base nine universal and is able to format accordingly.. I have emailed the programmers on several occasions informing them of this bug but have yet have received no reply, the only surefire solution to everyday surfing is to use a patched and secured IE, as until Firefox gets fixed, it in no way compares to the comprehensive abilities of the good old Microsoft product.
hope this helps .. take