[SM-USERS] Default preference file not found or not readable!

[Willy Mularto]

Hi list, I just installed the latest squirrelmail, I experienced a little problem. The user can not log on, and it returns this error message : Default preference file not found or not readable! Please contact your system administrator and report this error. I have do chown -Rf apache.apache to the data dir so that it can read by apache, did I missed some steps here? Please help, and thank you :)     Regards   Willy