The connection was reset - Firefox

[pandora3]

I am doing updates on my website, editing and adding content when I come across the error: The connection was reset

Why do I get this a lot? Seems like I get this and I refresh several times, no change. I restart Firefox, no change. I close out my browser for about 10 minutes, it works again for a little while before doing the same thing again.

I've attached a screenshot of the page I am getting.

 

[rps11997]

First of all Please mention your url hiding your url wont let the admin know that problem is of what.
You can try some steps to check is your website working or not

1. Check with other browser ex Google Chorme
2. Flush your DNS