Has started chkrootkit… tell, I should worry? 1 deletion(s), 2 deletion(s)… 
Thanks for your answer.
chkdirs: nothing detected
Checking `rexedcs'... not found
Checking `sniffer'... eth0: not promisc and no PF_PACKET sockets
Checking `w55808'... not infected
Checking `wted'... 2 deletion(s) between Wed Mar 7 04:51:40 2012 and Wed Mar 7 04:51:51 2012
1 deletion(s) between Wed Mar 7 14:38:45 2012 and Wed Mar 7 14:38:52 2012
1 deletion(s) between Wed Mar 7 22:32:04 2012 and Wed Mar 7 22:32:14 2012
1 deletion(s) between Thu Mar 8 00:15:10 2012 and Thu Mar 8 00:15:18 2012
1 deletion(s) between Thu Mar 8 02:35:43 2012 and Thu Mar 8 02:35:50 2012
1 deletion(s) between Thu Mar 8 03:48:47 2012 and Thu Mar 8 03:48:54 2012
1 deletion(s) between Thu Mar 8 23:37:01 2012 and Thu Mar 8 23:37:12 2012
1 deletion(s) between Fri Mar 9 04:04:12 2012 and Fri Mar 9 04:04:19 2012
1 deletion(s) between Fri Mar 9 05:32:48 2012 and Fri Mar 9 05:32:55 2012
1 deletion(s) between Fri Mar 9 18:16:59 2012 and Fri Mar 9 18:17:09 2012
1 deletion(s) between Fri Mar 9 19:22:55 2012 and Fri Mar 9 19:23:02 2012
2 deletion(s) between Sat Mar 10 01:38:04 2012 and Sat Mar 10 01:38:19 2012
1 deletion(s) between Sat Mar 10 04:54:01 2012 and Sat Mar 10 04:54:08 2012
1 deletion(s) between Sat Mar 10 15:39:02 2012 and Sat Mar 10 15:39:09 2012
1 deletion(s) between Sat Mar 10 16:39:53 2012 and Sat Mar 10 16:40:00 2012
1 deletion(s) between Sat Mar 10 17:22:01 2012 and Sat Mar 10 17:22:08 2012
2 deletion(s) between Sun Mar 11 00:50:15 2012 and Sun Mar 11 00:50:19 2012
1 deletion(s) between Sun Mar 11 03:02:34 2012 and Sun Mar 11 03:02:41 2012
1 deletion(s) between Sun Mar 11 04:34:52 2012 and Sun Mar 11 04:34:59 2012
1 deletion(s) between Sun Mar 11 14:44:19 2012 and Sun Mar 11 14:44:46 2012
1 deletion(s) between Mon Mar 12 00:56:08 2012 and Mon Mar 12 00:56:17 2012
1 deletion(s) between Mon Mar 12 02:22:45 2012 and Mon Mar 12 02:22:52 2012
1 deletion(s) between Mon Mar 12 05:16:36 2012 and Mon Mar 12 05:16:46 2012
1 deletion(s) between Tue Mar 13 04:32:19 2012 and Tue Mar 13 04:32:49 2012
1 deletion(s) between Tue Mar 13 05:47:26 2012 and Tue Mar 13 05:47:34 2012
1 deletion(s) between Wed Mar 14 00:21:27 2012 and Wed Mar 14 00:21:38 2012
1 deletion(s) between Wed Mar 14 02:10:25 2012 and Wed Mar 14 02:10:34 2012
1 deletion(s) between Wed Mar 14 15:18:45 2012 and Wed Mar 14 15:18:52 2012
1 deletion(s) between Thu Mar 15 01:04:06 2012 and Thu Mar 15 01:04:10 2012
1 deletion(s) between Thu Mar 15 01:04:10 2012 and Thu Mar 15 01:04:18 2012
2 deletion(s) between Thu Mar 15 02:03:39 2012 and Thu Mar 15 02:03:46 2012
1 deletion(s) between Thu Mar 15 03:12:47 2012 and Thu Mar 15 03:12:54 2012
1 deletion(s) between Thu Mar 15 23:05:51 2012 and Thu Mar 15 23:06:01 2012
1 deletion(s) between Fri Mar 16 05:41:12 2012 and Fri Mar 16 05:41:21 2012
1 deletion(s) between Fri Mar 16 17:48:47 2012 and Fri Mar 16 17:51:04 2012
1 deletion(s) between Fri Mar 16 17:51:49 2012 and Fri Mar 16 17:53:04 2012
1 deletion(s) between Fri Mar 16 17:53:26 2012 and Fri Mar 16 17:55:02 2012
1 deletion(s) between Fri Mar 16 17:56:01 2012 and Fri Mar 16 17:59:08 2012
3 deletion(s) between Sat Mar 17 00:35:19 2012 and Sat Mar 17 00:35:30 2012
1 deletion(s) between Sat Mar 17 01:10:48 2012 and Sat Mar 17 01:10:57 2012
2 deletion(s) between Sat Mar 17 02:22:17 2012 and Sat Mar 17 02:22:43 2012
1 deletion(s) between Sat Mar 17 03:05:10 2012 and Sat Mar 17 03:05:17 2012
1 deletion(s) between Sun Mar 18 01:18:00 2012 and Sun Mar 18 01:18:10 2012
1 deletion(s) between Sun Mar 18 04:40:00 2012 and Sun Mar 18 04:40:07 2012
1 deletion(s) between Sun Mar 18 14:29:11 2012 and Sun Mar 18 14:29:18 2012
1 deletion(s) between Mon Mar 19 03:53:46 2012 and Mon Mar 19 03:53:55 2012
1 deletion(s) between Mon Mar 19 22:26:07 2012 and Mon Mar 19 22:26:17 2012
1 deletion(s) between Mon Mar 19 23:22:37 2012 and Mon Mar 19 23:22:44 2012
1 deletion(s) between Tue Mar 20 01:59:06 2012 and Tue Mar 20 01:59:14 2012
1 deletion(s) between Tue Mar 20 02:52:23 2012 and Tue Mar 20 02:52:31 2012
1 deletion(s) between Tue Mar 20 15:36:41 2012 and Tue Mar 20 15:36:48 2012
2 deletion(s) between Tue Mar 20 22:17:36 2012 and Tue Mar 20 22:17:57 2012
1 deletion(s) between Wed Mar 21 00:45:10 2012 and Wed Mar 21 00:45:18 2012
1 deletion(s) between Wed Mar 21 12:55:10 2012 and Wed Mar 21 12:55:17 2012
2 deletion(s) between Wed Mar 21 21:25:05 2012 and Wed Mar 21 21:25:09 2012
1 deletion(s) between Wed Mar 21 23:36:11 2012 and Wed Mar 21 23:36:18 2012
2 deletion(s) between Thu Mar 22 02:11:27 2012 and Thu Mar 22 02:11:37 2012
1 deletion(s) between Fri Mar 23 01:24:23 2012 and Fri Mar 23 01:24:34 2012
1 deletion(s) between Fri Mar 23 04:47:54 2012 and Fri Mar 23 04:48:01 2012
1 deletion(s) between Fri Mar 23 18:13:55 2012 and Fri Mar 23 18:14:04 2012
2 deletion(s) between Fri Mar 23 23:22:23 2012 and Fri Mar 23 23:22:31 2012
1 deletion(s) between Sat Mar 24 00:40:14 2012 and Sat Mar 24 00:40:21 2012
1 deletion(s) between Sat Mar 24 05:33:37 2012 and Sat Mar 24 05:33:43 2012
1 deletion(s) between Sat Mar 24 17:32:05 2012 and Sat Mar 24 17:32:38 2012
1 deletion(s) between Sat Mar 24 17:33:16 2012 and Sat Mar 24 17:33:40 2012
2 deletion(s) between Sat Mar 24 17:34:20 2012 and Sat Mar 24 17:34:33 2012
1 deletion(s) between Sun Mar 25 00:42:29 2012 and Sun Mar 25 00:42:38 2012
1 deletion(s) between Sun Mar 25 14:39:48 2012 and Sun Mar 25 14:39:53 2012
1 deletion(s) between Sun Mar 25 14:39:53 2012 and Sun Mar 25 14:40:18 2012
2 deletion(s) between Sun Mar 25 14:53:32 2012 and Sun Mar 25 14:53:38 2012
1 deletion(s) between Sun Mar 25 15:14:33 2012 and Sun Mar 25 15:14:40 2012
1 deletion(s) between Sun Mar 25 15:47:18 2012 and Sun Mar 25 15:47:27 2012
1 deletion(s) between Mon Mar 26 02:08:58 2012 and Mon Mar 26 02:09:09 2012
1 deletion(s) between Mon Mar 26 17:11:00 2012 and Mon Mar 26 17:11:10 2012
1 deletion(s) between Tue Mar 27 00:24:58 2012 and Tue Mar 27 00:25:07 2012
2 deletion(s) between Tue Mar 27 14:16:40 2012 and Tue Mar 27 14:17:06 2012
2 deletion(s) between Tue Mar 27 19:36:08 2012 and Tue Mar 27 19:36:18 2012
1 deletion(s) between Tue Mar 27 21:53:11 2012 and Tue Mar 27 21:53:19 2012
1 deletion(s) between Wed Mar 28 01:01:58 2012 and Wed Mar 28 01:02:06 2012
Checking `scalper'... not infected
Checking `slapper'... not infected
Checking `z2'... chklastlog: nothing deleted
Checking `chkutmp'... The tty of the following user process(es) were not found
in /var/run/utmp !
! RUID PID TTY CMD
! root 1542 tty7 /usr/bin/Xorg -br :0 vt7 -nolisten tcp -auth /var/lib/xdm/authdir/authfiles/A:0-Gqe8ob
chkutmp: nothing deleted
Checking `OSX_RSPLUG'... not infected