I just purchased SIG Pro, and I also had a jquery conflict, not with Google Translator but with the superfish menu used by my Joomla template.
I wanted to use one of the jquery SIG Pro popups (colorbox), so I had to resolve the conflict.
As suggested here:
forum.joomlaworks.net/simple-image-gallery-pro-(plugin)/sig-pro-issues-with-another-jquery/
, I edited the file popup.php in plugins/content/jw_sigpro/popup_engines/jquery_colorbox and deleted line 34:
<script type="text/javascript">google.load("jquery", "1.3.2");</script>
This is the line which loads jquery. After deleting this line, the conflict was resolved.
You will have to edit the popup.php file related to your selected jquery-based popup engine.
Hope this helps.
Tim