"I see this in the Agent Log frequently"...
[05/Mar/2014:09:23:12.876] DEBUG - Querying available templates
INFO - Worker thread sending sessions
INFO - Worker thread checking for updated agent config
[05/Mar/2014:09:23:14.079] INFO -
Agent configuration update not supported
INFO - Worker thread checking for client update
[05/Mar/2014:09:23:14.595] INFO -
Client update not supported
INFO - Worker thread checking for license update
[05/Mar/2014:09:23:14.985] INFO -
License update not supported
INFO - Worker thread checking for template updates
"Should I worry?"
When the Agent log is reporting a feature not supported, it is simply indicating that it checked with the Server for an update but none was available. Depending upon on how often the Agent is configured to perform this check, these messages may appear frequently in the log.