Strange behavior of CB 1.8.1 with my J. 2.5.6

I've noted some very strange things:

Too many users with the same photo, persons with the city wrong, photo associate to the wrong person, ...
I noticed the thing when I installed the module "CB Random User" that display a user every page refresh.
I checked the dB and effectively data are wrong.

I'm not able to say if this is happened during the migration from J 1.5 to J. 2.5, but I afraid that something is working badly now because I remember recently a couple of users with another photo and now are different.

How I can verify this?

Thanks in advance
www.common.it/

Perhaps it's a problem with the module? Have you tried uninstalling it? Do you have caching enabled? If so try disabling it and purging it.

krileon wrote: Perhaps it's a problem with the module? Have you tried uninstalling it? Do you have caching enabled? If so try disabling it and purging it.

I don't think because the module reads data and doesn't write in the DB.
However I listed the users with CB user list and I see data wrong, double and triple photo, ...

I'm worry about a malicious code somewhere.

This could happen is if the id and user_id columns went out of sync in _comprofiler. Both columns should be exactly the same for every user. Could also happen if you've caching enabled and the cache is serving out of date data (almost always does; cache is best for static sites, not dynamic with active communities).

krileon wrote: This could happen is if the id and user_id columns went out of sync in _comprofiler. Both columns should be exactly the same for every user.

The CB Tools can verify this?

Yes, CB tools should find such an error.