Hi Dajo,

Look at some info about VM2 canonical link generation. On it´s code it´s perfectly divided in each view it´s creation. So I´ve disabled it only on product details pages.
I write the hack in VM2 code for product details pages

Go to /components/com_virtuemart/views/productdetails/view.html.php
On lines 207 and 208 (on my VM2 version) you´ll find the lines
// Set Canonic link
$document->addHeadLink($product->canonical, 'canonical', 'rel', '');

Just comment the second line so the Canonical link will be not added. Then all canonical links of product pages will be controled just by JoomSef. And when I type in JoomSef Url an especific Canonical link it´s not doubled :D
For example in www.gasfriocalor.com/aire-acondicionado-daikin-tx25jv

Dajo, what problem do you think it´s happening in view-source:www.gasfriocalor.com/foro? That one it´s just a Joomla2.5 menú button pointing to Kunena Forum
Please let me know where to look in order to solve this doubled canonical link ;)

I thank you in advance for your soonest answer.

Best regards,

Hi,

I think there will be the same issue as with VirtueMart. You can try searching for the "addHeadLink" function being used in Kunena source codes to find a place where canonical link gets created.