Question 15 to 30 seconds to send a post

In my site its taking about 15 to 30 seconds to send a post. Its a new forum. I only have around 60 users and 20 posts.
Its integrated with community builder.
Version: 1.5.11

Where should a look to see what is slowing sending posts?

My site is:
www.alotropia.org/endesarrollo
(you will be redirected)

fepa: to demonstrate/reproduce your experience, it would be helpful if you could provide us with a test account. I visited your website: your site pages load quickly and cleanly on my browser. Maybe you are having a problem with your ISP (maybe it's just your experience)? Are other users having the same problem? Let's find out.

Thankyou for your interest !
I've sent you a test user by pvt message.

I saw the evidence of the problem. Yes, it takes 20-30 seconds to post a message.

I have my suspicions about the Kunena template. Although it's a form of default_ex template, the icons and buttons have been changed - it uses Spanish language - perhaps this is the reason for the slowdown? Maybe the modified Kunena Spanish template is defective? There's only one way to find this out: re-install Kunena 1.5.11 and leave the default_ex template unchanged. See if the problem occurs then.

I doubt that template has anything to do with the slowness. Subscriptions can slow posting, as Kunena must send email to every subscribed user.

What are your specs for the hosting?

Thankyou.

Di sozzled experienced the same delay?

My hosting specs are:

VPS
*
1.13 GHZ
*
RAM
768 MB
*
Bandwidth
500 GB

My current disk usage is 25%

How do subscriptions work?
Is each mail sent individually before the actual post is sent?

Currently i don't have more than 5 subscriptions per thread.

Thanks