crudely the log says no kits detected.
2) you appear to have modified your conf file as I can see a whitelisted item but did you config for your packagemanager checks?
How about a link to your conf
3) have you considered installing and enabling extra checks such as
unhide skdet etc
4) you have no external mail setup or local mail
My server started acting weird today
does not help much
when did you start your first scan for RKH?
----before the upgrade?
did you keep any logs and did you read the readme? or the FAQ
When you think you have a (potential) security problem it is advised to
think and inform yourself thoroughly before you act. Please consider
checking the FAQ, the rkhunter-users mailing list archives, your
distribution documentation about security and security issues and the
CERT Intruder Detection Checklist, formerly located at
BTW you may have been better off posting in the security section as I am not an expert