HA log file

I was wondering if someone could help me understand this message that i found in the log file after we experienced a switch over. This has been happening for the last couple of days...

ha_daemon[5690]: id="38A1" severity="warn" sys="System" sub="ha" name="Current load average 33.39 is to high, warning 2 of 15 before switching to slave mode!"
2012:01:16-10:06:48 smtp1-2 ha_daemon[5516]: id="38A0" severity="info" sys="System" sub="ha" name="Monitoring interfaces for link beat: eth0 eth1 eth2 "
2012:01:16-10:07:45 smtp1-1 ha_daemon[5690]: id="38A1" severity="warn" sys="System" sub="ha" name="Current load average 22.31 is to high, warning 3 of 15 before switching to slave mode!"
2012:01:16-10:08:02 smtp1-4 ha_daemon[5493]: id="38C1" severity="info" sys="System" sub="ha" name="Node 1 is dead, received no heart beats!"
2012:01:16-10:08:02 smtp1-4 ha_daemon[5493]: id="38B5" severity="info" sys="System" sub="ha" name="Master is dead, taking over!"
2012:01:16-10:08:02 smtp1-4 ha_daemon[5493]: id="38B0" severity="info" sys="System" sub="ha" name="Switching to Master mode"
2012:01:16-10:08:03 smtp1-2 ha_daemon[5516]: id="38C1" severity="info" sys="System" sub="ha" name="Node 1 is dead, received no heart beats!"
2012:01:16-10:08:03 smtp1-4 slon_control[5637]: Set mode to MASTER
2012:01:16-10:08:03 smtp1-4 slon_control[5637]: Killing slon reporting [20640]