When viewing the Forefront Client Security (FCS) Malware Summary, it may not contain any data and instead simply report "There is no relevant information."
This occurs if no malware has been detected in the last 24 hours. This is by design.
When there is no malware that has been reported in the last 24 hours, the Malware Summary will not show a graph for 0. Instead it will say "There is no relevant information" as mentioned above.