message too short?

[محروم.كوم]

Hi guys and gals*
I have astrange problem* when logged into my site in Internet Explorer and I try to reply to a post I get this
The following errors occurred with your submission:

1. The message you have entered is too short. Please lengthen your message to at least 1 characters.

But in safari or firefox (mac) i can log in and post * reply etc* no problem* checked settings in admincp* even lowered the message amount to 0* (default was 10 i think)
any help or suggestions? www.sphynxlair.com

thanks in advanced. __DEFINE_LIKE_SHARE__