I am using drupal.org/projects/quicktabs which is working fine on every thing but Windows XP with Internet Explorer 7.

It only fails on this browser/system! I have set up a virtual machine with Vistual Studio Express Webdeveloper edition. Are there any other guides on how to debug on that system?

Are there a list of known compatibility issues with jquery and IE7?

I hope to get some pointers on how to get on! :-)