Originally Posted by lemonnier
Hi i have no idea about this problem but all i can say is that comment work fine with other templates. I installed switchy, supaclean, horizon and all work fine. I cannot figure out why it doesn't word with dark matter
Since the page blanks out AND others don't seem to have this issue, the only way for me to say anything sensible about it would be to see your Apache error log entries that probably show up when trying to post a comment. I wouldn't know how to look into this otherwise because I cannot reproduce the problem myself. Nor on my hosting provider nor on my local box.