Since I upgraded to RedHat 6.2 NCD X-terminals (Explora 700) respond confusing when pressing the alphanumerical "1" key: it results in a backspace. I tried this on two machines that upgraded from 6.1 to 6.2. During XDMCP login (XDM, GDM, or KDM) there's no problem, but once username and password are accepted, every "1" entered results in a "backspace" This can not be reproduced by "X -query .." from a RedHat 6.1 machine. Nor is the problem there when doing "DISPLAY=ncd:0 xterm", the problem is only there once the window manager has started (KDE, GNOME or Afterstep).
The problem can be solved by using xmodmap, which might cause the problem as well, if some .rc file changes keymappings during login: On NCD terminals xmodmap shows "keycode 22 = 1 exclam" when using RedHat 6.1. With RedHat 6.2 xmodmap shows "keycode 22 = BackSpace", which causes the problem. "keycode 22 = BackSpace" only applies to local X servers on PC hardware, but not in general.
Solution: get rid of /etc/X11/xinit/Xmodmap.
*** This bug has been marked as a duplicate of 11245 ***