[Users] Old Alerts Present

Running oVirt Engine 3.3.0-4.el6 on CentOS 6.4. These alerts are no longer valid; the host 'virt03' is responding and running VMs. No new ones have happened since. I've looked all over but not found a way to clear these. Any ideas? 2013-Oct-16, 11:33 Failed to verify Host virt03 Restart status, Please Restart Host virt03 manually. 2013-Oct-16, 11:00 Failed to power fence host virt03. Please check the host status and it's power management settings, and then manually reboot it and click "Confirm Host Has Been Rebooted" 2013-Oct-14, 10:37 Failed to verify Host virt02 Restart status, Please Restart Host virt02 manually.