InDesign question...

Hi all.

I've been using InDesign for a few years now. I'm a Mac user and have InDesign set to Quark settings (sorry all you purists!). Anyway, I settled down to do some work last night to find that a couple of the settings appear to have changed for no reason (in both CS3 and CS2).

Basically I was laying out some spreads and found that my usual shortcut of "space/Cmd/Alt" - which allow me to access the zoom tool quickly, but without actually changing the tool I'm in, has stopped working. As has pressing the Alt key to access the move tool (which then reverts back the the last tool I was in when I let go).

I have a feeling that it's an OSX problem and not InDesign as it has affected both my versions.

Can anyone help me to get these much needed shortcuts back please!
Drew