I have put a new SQL.jar file in my server/default/lib directory. This JAR file is my JDBC Driver for SQL Server. I have recently upgraded it from JDBC 1.0 to JDBC 2.0. I have strange thing happening. Sometimes when I start JBoss it uses the SQL.jar for the JDBC 1.0 compliant driver. I have deleted everything in my tmp/server/default/lib/ directory and well as everything in my temp directory but the old driver keeps being loaded into the memory. Has anyone every experienced this?