Uploads folder not sticking within current month/year

I manage my church’s website. Over the past several years we have turned over sections of the site to a few people to maintain and update content. They are restricted to only their own sections. None of them are particular web savvy.

I have been backing up the theme files prior to an update. While doing so, I have only now noticed that uploaded media files have not been going to the proper folders,i.e., by month and year, but apparently past years and months. For Example, most media in the past couple of months have been uploaded to 2010/10.

I have NO idea why or how this has happened. The other section editors are using different computers and logins.

I have tried to search the forums for help on this without success. I’d like to correct this or prevent this in the update.

One user maintaining the sermons page is supposed to upload the sermon mp3s to a custom folder just for those files. I am using the Redirect Upload plugin. Could this be part of the problem? But I don’t see how it could make other media uploads just land in some random directory.

What should I look for? thank you for your help