This is controlled by the SEO settings of your blog.

OK, thank you.
However, the SEO section is full of settings, which one causes this behaviour then?
Thanks.

The section about category pages. Sorry I'm replying from my iPhone, I can't give you a screenshot.

This is the manual page: http://b2evolution.net/man/category-pages-seo.

@vlaanderen your screenshot is not available, but I guess the parameter "Post contents" is what you're looking for.

Hello,
I have looked at the manual, but that is not helping.
The thing is, "Post contents" were the first place I tried, and I set it to display a whole post, but it does not make a blind bit of difference.
Here is the screenshot again:

All right, the Sharethis plugin is automatically inserting code into the excerpt field of the posts (http://b2evolution.net/man/post-advanced-properties-fieldset) when we create them. So you should replace that code with real content and then save the post.

The thing is, "Post contents" were the first place I tried, and I set it to display a whole post, but it does not make a blind bit of difference.

I'm still not able to reproduce this behavior, I see the code in my side only when the parameter Post contents is set to "Post excerpts".

Please, try setting a real excerpt in your posts and tell us who it's going.

Btw, at this moment your blog is down.

Yes, mqsolipa, it is back up now.
I also found that, after a refresh, it did what I wanted it to do.
Thank you for your help.
PS. I DO like b2e.

@mgsolipa do you think you can fix the sharethis plugin so that it adds the code at display time instead of putting it into the database (which is really a dirty hack)?

Thanks