Tomcat 5.5.23 dont start...

Good afternoon,

I was trying to use tomcat 5.5.23 in Linux Slackware 11 but when I start the
server in console: $CATALINA_HOME/bin/startup.sh, I dont have any error, the
page is white and when I see the file catalina.out in logs folder I have the
follow:

SEVERE: Error initializing endpoint
java.net.BindException: Address already in use:8080
        at org.apache.tomcat.util.net.PoolTcpEndpoint.initEndpoint(
PoolTcpEndpoint.java:298)
        at org.apache.coyote.http11.Http11BaseProtocol.init(
Http11BaseProtocol.java:139)
        at org.apache.catalina.connector.Connector.initialize(Connector.java
:1017)
        at org.apache.catalina.core.StandardService.initialize(
StandardService.java:578)
        at org.apache.catalina.core.StandardServer.initialize(
StandardServer.java:782)
        at org.apache.catalina.startup.Catalina.load(Catalina.java:504)
        at org.apache.catalina.startup.Catalina.load(Catalina.java:524)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(
NativeMethodAccessorImpl.java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(
DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:585)
        at org.apache.catalina.startup.Bootstrap.load(Bootstrap.java:267)
        at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:432)

Then, in the 'conf/server.xml', I change the connection port from '8080' to
'8090', after, change the shutdown port from '8005' to '8015' and nothing
happend.
I just see in ps -a, ps -ax, nmap localhost and anyone is running other
application in the tomcat port. Recently I remove tomcat server and install
again but nothing happend.
Now, what can I do???

Regards,
Iuliana.
System Analyst.
Brazil.