in Firefox i get this error-Message:

a script on this side is eventually busy or doesn't answer. You can stopp the script now, or go on, to see if the script will end.

Script: /var/www/third_party/jquery/jquery-1.10.2.min.js:4

Please attach a minimum test case as example survey. Thank you!

Import test.lss and run it.
Simple click through it till you get to the ranking-question(s)

dichteros: That's not a mimnimum test case. Anyway, I was able to reproduce it, reduced it now to a minimum case and attached it again.

Tony, can you have a look, please?

Fix committed to master branch: http://bugs.limesurvey.org/plugin.php?page=Source/view&id=13760

Because the rankings are sortable, the checkconditions() function must be fired on every possible rank every time an item is dropped - in this case, that is 134 firings of the function.

I have modified the jQuery selector so these firings will be limited to the maximum-answers value but that will only help if that setting is used and maximum-answers is a reasonable number.

Regardless of this fix, a ranking question with 134 options will never behave well.

2.05+ Build 140125 released