.spamassasin/user_prefs keeps getting reset?

Hello,

We have a client that is having issues with their .spamassasin/user_prefs file getting reset.

They had about 30 - 35 email addresses setup with the blacklist_from setting yesterday. Sometime over the the past 24 hours, the file was reset (blank). The user uses Cpanel to add email addresses.

Any ideas what may be causing this type of issue? The client has stated this is the third time that this has occurred.

Some basic information about the server itself:

cPanel 11.25.0-S43473 - WHM 11.25.0 - X 3.9
CENTOS 4.8 i686 standard on srv

Thanks for any ideas!

David