6386E/33 goofiness with DOS and modem

[Colonel Panic]

I recently added an official AT&T modem (model 2224CEO) to a running
6386E/33, hooked up to COM2 (I had only a DB9 cable).  It works
just fine with "cu" on UNIX.

The next time I booted DOS, I got drastic slow-downs in screen
operations, scrolling, etc.  Plus, sometimes I get activity on
the modem, as if DOS was accessing the modem or vice-versa.

I suspect that the console redirection feature (COM2CONS), which 
just stays active in the CMOS (UNIX doesn't care; if it has a working
video card, it ignores the redirection via conflgs), is affecting
the machine's operation under DOS.  Will I have to manually disable
the redirection via conflgs whenever I want to use DOS?  The hotline
said no, but the behavior I'm getting suggests otherwise.

Thanks in advance for any info.

--
Alan Denney # Informix # aland at informix.com # {pyramid|uunet}!infmx!aland

 "The driver says, 'One more cup of coffee and I'll be all right...'
  'Pop a Bennie, another Bennie'..."             - The Bobs, "Bus Plunge"