kill -KILL fails to kill process

[Wojciech Puchar]

> others).  This can happen when your process blocks on pending file
> I/O.  The process opens a file descriptor, could even be a socket, and

asterisk does only file I/O and network I/O.

file I/O works fine so it can't be a problem (everything else works on the 
same filesystem.

> get what it's waiting for (hopefully), then move on.  At that very
> moment, the kill signal would be delivered and the process would die

after a day - still not killed.
i'm going to reboot this today.

BTW asterisk is threaded. possibly main thread is stopped, but others not.