TOPIC: How not to remove backslash from comments?

I have little math site, so often I need to write some LaTeX code, like this:
[math]\frac{1}{2}[/math]
but JoomlaComment remove backslash "\" from input. How to stop it?

Which version are you using? I can not confirm this on 4.0RC1

I found error, it was in my MySQL, not in JoomlaComments. Sorry...