Pingbacks not showing up

Hi all,

I can’t say it’s been since I upgraded to 2.5 but it’s been a while that pingbacks or trackbacks do not show in my site. They were showing up in the past (example).

but for new posts they are not showing up. I receive them, they are counted as comments but not listed. For example, here.
Comments counter says there are 3 comments, but only 2 are displayed. the third, the one it’s a pingback from another site, it’s nowhere to be seen but I can see it in my wordpress dashboard as the old ones who does appear.

Any clue what’s happening?

Thanks.