ALT+F7 (Linux console to X switch) results in X picking up the key press

[Nikos Chantziaras]

When switching from a Linux console back to X with Alt+F7, X detects the 
Alt key as being pressed (in KDE for example, this switches focus to the 
active application's menu and in xterm it results in garbage 
characters).  Shouldn't this key combination be ignored by X?

The relevant section of my xorg.conf:

Section "InputDevice"
     Identifier "Keyboard1"
     Driver     "kbd"
     Option     "AutoRepeat" "250 30"
     Option     "XkbRules" "xorg"
     Option     "XkbModel" "pc104"
     Option     "XkbLayout" "us"
EndSection

The keyboard is connected to the PS/2 keyboard port and has 104 keys (I 
counted :P)