kill a process for sure
 

Is there a better way to kill a process than "kill -9"? Sometimes I have a problem with my nfs server and all the nfs-related processes on the client hang. They don't respond to kill -9. They also mess up any future nfs-related activity. And I can't reboot cleanly because the "Sending all processes the KILL signal" line just sits there...

In those situations where you find that you are unable to kill a process, it is often in your best interest to take a closer look at what other process a process is tied to, on way of doing this is by:

ps aexf

You might have success, by attacking the associated (parent and child) process, which might be preventing the process form passing on.