I have a new installation of Solaris 10 10/09 on x86 hardware. The attached keyboard has a normal German layout. The system is configured accordingly by 'kbd -s'.
The generic keys (letter, number, umlaut) work fine. Unfortunately some keys like <, >, | or # do not. They produce no output on the text console at all.
I tried PS/2 and USB keyboards. I cannot test it under X11 as it is currently not working.