I recently installed the shiny new Skype 4.0 and it is a big leap forward as a software program.

One unexpected side-effect however of installing the Skype Firefox Add-On is that it blocks all JavaScript pop-ups on every website in firefox. Given that the majority of e-commerce and utility websites need javascript pop-ups to work properly, its a massive bug that Skype have given birth to.

The fix is simple:

In Firefox, click on “Tools > Options”

Then click on “Add-Ons”

Find the “Skype Extension for Firefox” add-on

Click “Uninstall” and then restart the browser.