A script on this page may be busy, or it may have stopped responding. You can stop the script now, open the script in the debugger, or let the script continue.

Script: http://code.jquery.com/jquery-1.11.0.min.js:3

^ THIS keeps showing up. it gives the option to continue, debug or stop. I've been clicking stop everytime it's asking. I clicked debug ONCE and it crashed my browser. I use Firefox as my browser. Also my browser will sometimes just like stop or stutter and things I type out won't show up for a moment or it comes out all grouped together justlikethis.

I have no clue what is goin on :/ I also cleared my internet history, defragged and disc clean and it didn't stop.

This happens to me all the time. I usually just stop the script and refresh the page or click continue script and wait it out. I've reported it before but nothing's ever done about it, so maybe nothing can be done. It happens to me especially when I go to the achievements page.

Jquery has a Wikipedia page. It says it doesn't work for some browsers. Maybe some information there will help you?