The next version is going to include some meaningful changes on the client side, mainly we have switched to asynchronous loading of our script and on demand loading of other scripts used within (such as jQuery UI, Google Translate API, Microsoft Translate API and others).
The change means that the page loads much faster and it becomes more responsive. Also hangups that were caused by slow loading of the third party scripts (such as the one reported in this bug) will be eliminated.
This release might also include an update to jQuery 1.4 which has a much faster engine, and since it is planed for release on January 14th, we hope to release on the 15th.
The pre-release is already running on this site, so if you encounter any problems in translated pages, please inform us.