Tvheadend

I'm talking about
Configuration->DVB Inputs->TV Adapter->Services

It's very difficult to manage services, because the page reload after some (30???) seconds loosing any changes.
i need to "save changes" every few seconds not to loose them, spending much time to manage it.

I'm point to HotBird 13E and i have many services/channels.... and it's difficult to go to the bottom of the list too.

I'm usign chrome, because when i load the services page with Firefox there is this error:

A script on this page may be busy, or it may have stopped responding. You can stop the script now, or you can continue to see if the script will complete.

Script: http:/<server>/static/extjs/ext-all.js:7

Thank You
P