Java.net. BindException: Address already in use: jvm_binding 0.0

Q: java.net. bindException: Address already in use: JVM_Bind 0.0.0.0: 80 use netstat-ano to view port usage: [plain] Proto Local Address Foreign Address State pid tcp 0.0.0.0: 80 0.0.0.0: 0 LISTENING 9136 use tasklist to view processes: [plain] Image Name PID Session Name Session # Mem Usage ============================ ========================================================== === Skype.exe 9136 Console 1 86,940 K is that Skype uses port 80 ?? Enable Skype tool-Option-advanced-connection... Why does it take up to 80!