Path: utzoo!attcan!uunet!zaphod.mps.ohio-state.edu!usc!ucsd!ucbvax!NUSC.NAVY.MIL!sherman%vsdec.decnet
From: sherman%vsdec.decnet@NUSC.NAVY.MIL ("VSDEC::SHERMAN")
Newsgroups: comp.protocols.tcp-ip
Subject: Why do mysterious UUUUUUUUUUUUs sometimes dance on my screen?
Message-ID: <9011111530.AA10882@ucbvax.Berkeley.EDU>
Date: 11 Nov 90 14:35:00 GMT
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The Internet
Lines: 26

Hi.

I've had/seen an intermittent problem over the last 8 years, and
I have yet to bump into anybody who can explain why I see this
problem, or what it is. 

I'll be connected to some computer via modem doing my normal work
when suddenly I'll get about 60 uppercase Us on my screen.  From
then on, everything I type gets echoed on my CRT but I get no
responses back from the computer that I'm connected to.  I've
tried typing commands that would effect things on the computer
that I'm dialed up to so that when I sign back on again I could
tell if it was seeing what I typed, but the commands were never
acted upon.  But the modem is still off-hook and got a carrier-
detect. 

I've seen the mysterious UUUUUUUs using different terminals and
terminal emulators, when using different modems, when dialed up
not only to different computers, but also different sites across
the country.

Does anybody there know what this is?  I only happens perhaps 3
or 4 times a year, but it's always very annoying and extremely
puzzling. 

Bill