We ran into a problem while we are doing a stress test. The stress application was simulating 10 users connecting simultaneously and then the database connection is lost.

According the log: Could not connect to SQL-SRVR1 as a TEST_USER.

When I tried to connect to the server using a SQL Management Studio, it can connect.

Anybody has faced this issue?

SQL EXPRESS 2008 (Same issue when i tried a normal SQL 2008)
PHP 5.2.8
APACHE 2.0
SUGARCRM 6.1.1