Any idea why xon/xoff flow control would suddenly become enabled? I am working on a remote Ubuntu host, and suddenly ctrl-s is borderline malicious. I use emacs, and I don't even think about ctrl-s before I do it, so the xon/xoff flow control is very disruptive. The machine uptime is 18 days, and this has happened in the last hour. I haven't messed with any network config. I guess a system administrator could have updated packages. Could that have enabled xon/xoff flow control?
