whats up..is anyone else getting this?

HTTP Status 500 -
type Exception report
message
description The server encountered an internal error () that prevented it from fulfilling this request.
exception
org.springframework.web.util.NestedServletException: Handler processing failed; nested exception is java.lang.NoClassDefFoundError: org/hsqldb/jdbc/Util
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:924)
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:807)
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:571)
org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:501)
javax.servlet.http.HttpServlet.service(HttpServlet.java:627)
javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
root cause
java.lang.NoClassDefFoundError: org/hsqldb/jdbc/Util
org.hsqldb.jdbc.jdbcConnection.<init>(Unknown Source)
org.hsqldb.jdbcDriver.getConnection(Unknown Source)
org.hsqldb.jdbcDriver.connect(Unknown Source)
java.sql.DriverManager.getConnection(DriverManager.java:582)
java.sql.DriverManager.getConnection(DriverManager.java:154)
org.springframework.jdbc.datasource.DriverManagerDataSource.getConnectionFromDriverManager(DriverManagerDataSource.java:174)
org.springframework.jdbc.datasource.DriverManagerDataSource.getConnectionFromDriver(DriverManagerDataSource.java:165)
org.springframework.jdbc.datasource.AbstractDriverBasedDataSource.getConnectionFromDriver(AbstractDriverBasedDataSource.java:149)
org.springframework.jdbc.datasource.AbstractDriverBasedDataSource.getConnection(AbstractDriverBasedDataSource.java:119)
org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:113)
org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:79)
org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:577)
org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:641)
org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:670)
org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:678)
org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:710)
net.sourceforge.subsonic.backend.dao.AbstractDao.query(AbstractDao.java:41)
net.sourceforge.subsonic.backend.dao.AbstractDao.queryOne(AbstractDao.java:45)
net.sourceforge.subsonic.backend.dao.RedirectionDao.getRedirection(RedirectionDao.java:32)
net.sourceforge.subsonic.backend.controller.RedirectionController.handleRequest(RedirectionController.java:57)
org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter.handle(SimpleControllerHandlerAdapter.java:48)
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:875)
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:807)
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:571)
org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:501)
javax.servlet.http.HttpServlet.service(HttpServlet.java:627)
javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
note The full stack trace of the root cause is available in the Apache Tomcat/5.5.33 logs.
Apache Tomcat/5.5.33
i cant use my system..
type Exception report
message
description The server encountered an internal error () that prevented it from fulfilling this request.
exception
org.springframework.web.util.NestedServletException: Handler processing failed; nested exception is java.lang.NoClassDefFoundError: org/hsqldb/jdbc/Util
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:924)
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:807)
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:571)
org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:501)
javax.servlet.http.HttpServlet.service(HttpServlet.java:627)
javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
root cause
java.lang.NoClassDefFoundError: org/hsqldb/jdbc/Util
org.hsqldb.jdbc.jdbcConnection.<init>(Unknown Source)
org.hsqldb.jdbcDriver.getConnection(Unknown Source)
org.hsqldb.jdbcDriver.connect(Unknown Source)
java.sql.DriverManager.getConnection(DriverManager.java:582)
java.sql.DriverManager.getConnection(DriverManager.java:154)
org.springframework.jdbc.datasource.DriverManagerDataSource.getConnectionFromDriverManager(DriverManagerDataSource.java:174)
org.springframework.jdbc.datasource.DriverManagerDataSource.getConnectionFromDriver(DriverManagerDataSource.java:165)
org.springframework.jdbc.datasource.AbstractDriverBasedDataSource.getConnectionFromDriver(AbstractDriverBasedDataSource.java:149)
org.springframework.jdbc.datasource.AbstractDriverBasedDataSource.getConnection(AbstractDriverBasedDataSource.java:119)
org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:113)
org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:79)
org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:577)
org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:641)
org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:670)
org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:678)
org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:710)
net.sourceforge.subsonic.backend.dao.AbstractDao.query(AbstractDao.java:41)
net.sourceforge.subsonic.backend.dao.AbstractDao.queryOne(AbstractDao.java:45)
net.sourceforge.subsonic.backend.dao.RedirectionDao.getRedirection(RedirectionDao.java:32)
net.sourceforge.subsonic.backend.controller.RedirectionController.handleRequest(RedirectionController.java:57)
org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter.handle(SimpleControllerHandlerAdapter.java:48)
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:875)
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:807)
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:571)
org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:501)
javax.servlet.http.HttpServlet.service(HttpServlet.java:627)
javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
note The full stack trace of the root cause is available in the Apache Tomcat/5.5.33 logs.
Apache Tomcat/5.5.33
i cant use my system..