Hm. I NEVER seen such behaviour. Yes, X can lock keyboard and mouse sometimes
but to lock the whole system ???
> It seems that the OS should be able to detect a rogue application
> and take some corrective action -- just letting me log in on a different
> terminal to kill the offending process would be sufficient.
Use Ctrl-Alt-SysRq :-)
> Of course, there is the possibility that my configuration is incorrect...
> Can someone help out?
Since X has full control over keyboard (raw mode!) you can not switch to other
console without X help... You can return keyboard from raw mode via
Ctrl-Alt-SysRq-R ... Atl-Fx will work then...
P.S. I assume you have kernel 2.2 with SysRq support enabled, of course...
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