After installing Patch 18.104.22.168, you notice that the patch level on the System Tab -> Configure Page still shows 22.214.171.124.
This is due to a value in the database not being updated.
To confirm that the patch did install, right click on the file D:\Kaseya\WebPages\SystemTab\agentAlertData.asp and check the "Last Modified" date.
If this shows 27th March 2015, then the patch applied
WORKAROUND / RESOLUTION
This can safely be ignored, however, if you would like this correcting, a simple change to the database will update the value.
If you would like this doing, then go to http://helpdesk.kaseya.com and create a ticket, making note of this KB article