Actually the posts are still there. They can be found using a search for text contained within them and they appear in the threads they were posted to. However, they can't be found when clicking on the user name and then 'View Recent Posts', plus the user profile has a blank space where the publicly displayed name should be and the number of posts reads 0.

In addition, searching by Member Number Or Publicly Displayed Name brings up no results, searching within Member Management on the control panel for the Public Name or User Name brings up no results and if I list all the members the list excludes member 1201 (i.e. the list goes 1200 then 1202) and the other missing member.

I rebuilt and reindexed the site earlier today and now the handle 'unregistered' appears below their names.

Any idea what's going on here or how it can be fixed? Unfortunately no backups of the forums are available.

Thank you.

BTW - this link http://tinyurl.com/gxtxl shows the member (Dave H) and his first post, it also has him correctly listed as moderator and records his total number of posts.

However, this link http://tinyurl.com/jo22j, which is the ninth page of the same thread, has him listed as 'unregistered' and with no posts.