According to Mike Long:
>
>One way to totally lock up the I/O ports is to do the following:
>
>1) Set XON/XOFF flow control on the port (stty says " ixon")
>2) Connect
>3) Get the remote end of the link to send a ^S (XOFF).
>
>BOOM!  That port (and any process that has it open) is hung until you
>reboot, unless the remote end sends a ^Q (XON).
>
>I do not consider this to be a bug in the com driver, but that doesn't
>keep it from being annoying.
>

Ummm you are not very clear here.  Do you mean _all_ i/o (i.e. read
and write) is blocked?  If the process is doing a normal write on the
port it is normal behaviour for the port and process.  It really
depends on what the process to doing to the port.  More info please!

-- 
Brett Lymn, Computer Systems Administrator, AWA Defence Industries
===============================================================================
"Also, it takes a lot longer to get up North ..... The slow way"
        - "Clever Trevor" Ian Drury