Tomcat integrated with Eclipse

If you're using Tomcat inside Eclipse, sometimes the processes Eclipse thinks it stopped aren't really stopped.  When you try to stop and start the Tomcat server, you end up getting errors that are something like "ports (x,y,z) are already in use."

There are usually leftover javaw.exe processes that are hanging out and actually still are using that port, even though they aren't responding to the ports' activity anymore.  Killing those off does the trick (although a reboot obviously fixes the problem too, it's a huge pain in my butt when I've got ten applications all running and just where I want them).