Strange popup from Proxo

[Mele20]

I was composing a comment in the Avira forums just now and I tried to add another link in my post and Proxo popped up and said:

"This script is too busy for its own good. Kill it?" It had an "ok" button and a "cancel" button.

Proxo kept trying to stop me from adding the link. So, I put Proxo on bypass so I could add the link and it popped up the same thing again! I had several more links to add to this rather long post and I had to fight Proxo each time because it would stick this popup in my face even when bypassed. I used the x in the upper right corner of the popup to get it to go away and then I could add the name of the link. The next step, in that forum, is to add the link and Proxo popped up again with this strange message.

I finally got all the links entered but it wasn't easy. I guess I am dumb but I don't understand the meaning of that message. What script is too busy and why should it be killed?