VC switching during install

[karlheg@bittersweet.inetarena.com (Karl M. Hegbloom)]

 The other day I used the 2.2.4 rescue/base disks to install a
 masquerading proxy DSL gateway.  At one point during the
 installation, I switched virtual consoles to look at the log
 messages.

 The install program updated its screen, and wrote to the console I
 had switched to, rather than to vc1 where it was running.  That is,
 the screen turned blue with a dialog up.

 I'm sorry, but I cannot recall just exactly what phase of the
 installation I was at, and did not jot it down then.

 When I typed, I saw nothing;  I switched back to vc1 and the screen
 wasn't right, the things I'd typed had been written there, and
 pushing C-l didn't redraw.

 I've got nothing better to do today but read books or code...  I'm
 going to see if I can find the relevant code and whether I can
 understand it well enough to try and find the problem.  Don't count
 on me to fix anything.