After updating Xorg to 6.9.0-5.6 my Alt-Gr key stopped working (key used for @#'~ etc. characters) on Mandriva 2006. It still works in console mode (no X-Server). Changing driver from nvidia to nv didn't help, so it is seems not caused by the Nvidia driver I also updated. I tried running xorgconfig, but it didn't help. It just messed up the configuration file ...
Enabling the KDE keyboard layout brings the key back to life, but I'd prefer fixing it in Xorg (or wherever the problem comes from).
Thanks for your help.