Un-responsive script:

[imageinaction]

Every time I add an item to the cart it get the following error message:

A script on this page may be busy, or it may have stopped responding. You can stop the script now, or you can continue to see if the script will complete.
Script: http://ajax.googleapis.com/ajax/libs/jquery/1.6.4/jquery.min.js:2

Selecting stop script does exactly that, it stops the script and the process continues.  How can I ensure this script runs properly and subsequently prevent this pop-up message appearing?

I'm using the most recent versions of Joomla and Virtumart.

[Milbo]

sorry no clue, which browser do you use?

[jenkinhill]

The :2 means that the browser (which I'd guess is Firefox?) is getting stuck on line 2 of the minified jQuery library. But some other code will be causing it.  Maybe you have a corrupt file somewhere or have edited some core files? Could it be a session issue?

[imageinaction]

Sorry for the delay in my response, I've been a little preoccupied.

I have been using Firefox, but just tested the problem on Chrome and Safari both of which completely froze when I tried to add an item to the cart.

I thought I had solved the problem by deleting all the effected products and by duplicating one that was still functioning correctly. However, several of the newly constructed products then produced this same error.  The only discernible difference I could see between the 'working' products and the 'failing' products was the existence of a thumbnail image of another product. So I added a thumbnail to one of the 'failing' products and "hey presto" it worked in all browsers I checked.

However I have also noticed that if I select the category they are associated with it produces a blank screen. This can be recovered by using the 'back' arrow and re-selecting the same category, this always works.