Stray f7 character when switching back to X from virtual console

[Renaud Dreyer <rdreyer@math.berkeley.edu>]

When I switch back to X (Virtual Terminal 7), after having visited another
virtual console, by pressing control-command-f7, a stray f7 character
gets generated into whatever window I'm working at the moment in X. 
Is there any way to get rid of this? This doesn't happen with the
other virtual (text) consoles.

This is on a PowerMac 7300 with a Rage 128 Orion, running the rage128
accelerated Xpmac. Thanks,

                   Renaud