Do you recognize this alert?
SMS_SERVER - SMS 2003 Perf Threshold: SMS SQL Connections > 500 over 2 hours.
SQLServer:General Statistics: User Connections: value = 300,5. The average over last 2 samples is 300.5.
The cause might be that the MOM agent has a large number of connection from sqldmo_%/sqldmo_(number) to the database. The agent not always disconnect. Try to restart you mom agent, you can do that by the following command
net stop mom
net start mom