Hey,

Try this, edit the Jom Comment file at JOOMLA/components/com_jomcomment/views.jomcomment.php and at around line 985, look for the block of codes below,

$link = cmsSefAmpReplace('index.php?opotion=com_jomcomment&task=myfavorites&Itemid=' . jcGetItemId());

Replace it with the following,

$link = cmsSefAmpReplace('index.php?option=com_jomcomment&task=myfavorites&Itemid=' . jcGetItemId());

Then head on to ARTIO's Joom SEF back end, clear the cache and Jom Comment's backend to clear the cache. This should resolve these duplicated URLs.

Sorry for the inconveniences caused.