We just upgraded Cent from 5.3 to 5.5 on a bunch of servers with little to no issues (kudos to you guys) except on a few servers where it appears we are having a problem w/ the Tomcat upgrade. Previously our application server was working fine under 5.3 with Tomcat/Java installed as such: java-1.4.2-gcj-compat-1.4.2.0-40jpp.115 java-1.6.0-openjdk-1.6.0.0-0.30.b09.el5 java-1.6.0-openjdk-devel-1.6.0.0-0.30.b09.el5 java-sun-jdbc-stdext-2.0.1-1mamba java-sun-jdbc-stdext-javadoc-2.0.1-1mamba tomcat5-5.5.23-0jpp.7.el5_2.1 tomcat5-common-lib-5.5.23-0jpp.7.el5_2.1 tomcat5-jasper-5.5.23-0jpp.7.el5_2.1 tomcat5-jsp-2.0-api-5.5.23-0jpp.7.el5_2.1 tomcat5-server-lib-5.5.23-0jpp.7.el5_2.1 tomcat5-servlet-2.4-api-5.5.23-0jpp.7.el5_2.1 Now that we've run the full update, we have this installed: java-1.4.2-gcj-compat-1.4.2.0-40jpp.115 java-1.6.0-openjdk-1.6.0.0-1.16.b17.el5 java-1.6.0-openjdk-devel-1.6.0.0-1.16.b17.el5 java-sun-jdbc-stdext-2.0.1-1mamba java-sun-jdbc-stdext-javadoc-2.0.1-1mamba tomcat5-5.5.23-0jpp.11.el5_5 tomcat5-common-lib-5.5.23-0jpp.11.el5_5 tomcat5-jasper-5.5.23-0jpp.11.el5_5 tomcat5-jsp-2.0-api-5.5.23-0jpp.11.el5_5 tomcat5-server-lib-5.5.23-0jpp.11.el5_5 tomcat5-servlet-2.4-api-5.5.23-0jpp.11.el5_5 tzdata-java-2010l-1.el5 I don't see any significant changes. All of the configs appear to be the same. Yet now on our application startup, we see the following: Starting tomcat5: /usr/bin/rebuild-jar-repository: error: Could not find jdbc-stdext Java extension for this JVM /usr/bin/rebuild-jar-repository: error: Could not find jndi Java extension for this JVM /usr/bin/rebuild-jar-repository: error: Some detected jars were not found for this jvm /usr/bin/rebuild-jar-repository: error: Could not find jaas Java extension for this JVM /usr/bin/rebuild-jar-repository: error: Some detected jars were not found for this jvm ....what could have changed to have caused these issues? Having trouble hunting this down. Any help that could be provided would be sincerely appreciated. Thanks, Frank