which version of webMethods r u using, in webMethods 8 version u can able to kill the flow service.
if you are using wm8 version in Settings–>Extended please set the extended setting as watt.server.threadKill.enabled=true, than restart the IS, if u do this setting you can see the threads in server–>Statistics–>System threads, here you can able to kill the flow service thread
regards,
anil kumar ellendula
#webMethods#webMethods-General#webMethods-Architecture#Integration-Server-and-ESB