Did you already clear Firefox's cache? This article has the steps: How to clear the Firefox cache.

If you installed YesScript to block that server, I think that might be a good idea, as long as you don't need to use that website for other purposes.

As for why that script is taking so long to run that it is considered nonresponsive, I'm not sure. Firefox has a hidden setting to allow slow scripts to run longer before bothering you with a dialog, but that may end up making you wait longer to stop a bad script!

I tried that and still the same. It seems to be a problem wth Firefox and Skype - I uninstalled Skype and it still happened. Re-installing Skype has made no difference. Disabling the Skype extension has not even helped!

I'm not sure what the script on the site is doing, and line 194 is several screens long and would take me many hours to try to understand. Is it annoying enough to post on Microsoft's support site?

The error does not happen in IE so Microsoft say it is a Firefox issue.

As an experiment could you test in a private browsing window? That will not refer to any preexisting Skype cookies that might be coming into play. You can launch a new private window using either Ctrl+Shift+p or from the menu. Any difference?

Using Hotmail in a private window as you advise does exactly the same script error.

Thanks for testing. So it isn't a problem with previous history or cookies for Skype or live.com.

That script is not loading for me (see screen shot). This could be because I have an old, mostly inactive Skype account that I haven't linked to my mail account, or because I haven't saved my login for Skype. Either way, I'm not sure how to replicate your situation.

Could you try totally uninstalling the Skype Click-to-Call add-on? This might be done through the Windows control panel, or through an option somewhere in the Skype software.

I have done that once before with no difference, so I have done it again and still getting the same error message. I have tried three different PC's and only on Firefox this problem happens, with IE and Chrome not a problem. So obviously a problem with Firefox.

Any more ideas?

Do you usually let the script complete or stop it? If you usually stop it, try letting it run to completion once to see whether letting it finish whatever it's trying to do helps.

Otherwise, no, it's a dead end for me since I don't get that script loading.

I have tried stopping annd allowing the script to continue and it still comes back again the next time I log into my Hotmail account.

I am also experiencing exactly the same problem - the up to date URL is https://swx.cdn.skype.com/v/1.7.77/js/fullexperience.min.js:324 as at November 17 2015.

Hi cuddling101, when I try to inspect that script I cannot load it:

https://swx.cdn.skype.com/v/1.7.77/js/fullexperience.min.js

How many times do you have to "Continue" the script to allow it run to completion?