Search Engine Friendly URL's and K2 tagging system problem

[paquito]

Hi, I'm trying to use the Search Engine Friendly URLs option in joomla with K2 installed but I'm having an issue when there's a page listing articles fetched by a tag.

No errors, but it looks like the wrong page/contents are shown (always the same, no matter the page we select).

This page for example:

http://www.artofswimming.com/index.php? ... view=iteml...

it works fine if SEF URLs is off, but as soon as I switch it on it displays some random contents.

It works ok in all the other pages.

Can please anyone let me know if there's a solution to this?

cheers
p