Hi, I have a rare problem in a friend's of mine site: www.profesionalespsi.com

It shows some times blank K2 contents (menues and sidebars shows ok)

I enabled developer output and php error but no errors are shown, Simple after the "
"<!-- Start K2 Category Layout -->" is the "<!-- End K2 Category Layout -->", like if no articles were published.

What can I do?

Thanks in advance,
Mauro.