Problem with Tomcat integration: Address localhost:8080 is alreadyin use : J2EE

This is a discussion on Problem with Tomcat integration: Address localhost:8080 is alreadyin use within the J2EE forums in Framework and Interface Programming category; Hi, I'm having a strange problem with the Tomcat integration. Suddenly I get the error "Error running <run config name>: Address localhost:8080 is already in use". I can run Tomcat outside IDEA without any problems. When I do that I see the Tomcat intro page on 8080. When I shutdown Tomcat there isn't anything on 8080. IDEA even doesn't try to start Tomcat before bringing up this error. I tried it with a GWT project and with another web project that doesn't use GWT at all. I even deleted the system folder to make sure IDEA's caches didn't get wild ...