--- rkhunter.orig/files/os.dat	2007-06-15 04:51:07.000000000 +0800
+++ rkhunter/files/os.dat	2008-05-04 00:11:31.000000000 +0800
@@ -233,3 +233,4 @@
 988:Debian stable (arm):/usr/bin/md5sum:/bin:
 989:Debian stable (powerpc):/usr/bin/md5sum:/bin:
 990:Debian stable (x86_64):/usr/bin/md5sum:/bin:
+991:Gentoo Linux 1.6 (powerpc64):/usr/bin/md5sum:/bin: