I have been playing with settings in my new K10D, and somehow (to my delight) I got the ISO/remaining shots roles reversed.
Normally, I remember that most modes would show remaining shots (Sv and TAv would show ISO) all the time in status LCD and viewfinder, and display ISO when you press the OK button.
This happens when the mode dial is set to TAv. That's the option where you set the shutter speed and aperture, but let the camera figure out which ISO gets the best exposure (within the range that you define).
If you're seeing the ISO not just in TAv but in all modes, well, I don't know what you did. I would poke around in the custom settings menus.
PS I really like the TAv mode. I use it now when I'm shooting indoor sports.