Apologies for multi-posting, but the thread of my previous post ("Categories gone") was suddenly marked as resolved.
I have a problem with some of the categories of my blog at http://d0rblog.wordpress.com/ . Several posts have lost their categories in the main page and are now listed under "Uncategorized". However, if I list all posts by a certain category (by clicking on the category's name), they appear listed under the correct category. It seems just a problem of how posts are rendered in the main page.
Is it possible to fix that? Thanks in advance!