chkrootkit: found infected files

[krzd]

Hello,
I have got following message from chkrootkit. How to fix these problems?

Quote:/etc/cron.daily/chkrootkit:
The following suspicious files and directories were found:
/usr/lib/jvm/java-6-sun-1.6.0.12/.systemPrefs /usr/lib/jvm/.java-6-sun.jinfo /lib/init/rw/.ramfs

INFECTED (PORTS: 465)
unable to open wtmp-file wtmp
not tested: not found wtmp and/or lastlog file
run-parts: /etc/cron.daily/chkrootkit exited with return code 2