Please disable all plugins except wpDiscuz then delete caches and test it, this is plugin conflict. During last two years I’ve never seen such problem.
I see something non-wpdiscuz:

Thread Starter
MartiX
(@martix79)
Done, and still the same. I have left only framework and firewall plugins. All others are off. I was trying to look into page source to find out what is changed, but can’t see what is going on.
I’m sorry but I have no idea where is the conflict point, try to deactivate the framework and firewall plugins as well to be sure this is not other issue.
Thread Starter
MartiX
(@martix79)
🙁 I have tried others themes and it’s ok then, so it has to be the conflict with that Gantry framework. Thanks for your time. I’ll keep looking for a solution. wpDiscuz is really nice plugin and would like to use it.
Hi,
One of the Gantry devs here. There’s an issue with your plugin and ours caused by the overbuffer. Both plugins are using it but in the wpDiscuz you clean it and discard it’s current content and this is where the issue comes from.
It’s an easy fix 🙂
In plugins/wpdiscuz/templates/comment/comment-form.php on line 56 replace
ob_clean();
with:
ob_get_clean();
This should fix it 🙂
Thanks!
Jakub
Thread Starter
MartiX
(@martix79)
It’s working!!!!!!
Jakub… you have no idea how much I’m appreciated !!!
Thank you so so so MUCH!!!!