Mounting pen-drives

[Anne Wilson]

Three systems using FC4, all kept up to date.  Initially, all three 
auto-mounted pen-drives, with a pop-up asking whether to open a file manager 
window.  Now this only happens in one of them.  The drives have to be 
manually mounted in the other two.

Clearly something has been changed in two of them, but I don't recall doing 
anything that would affect this.  Can ayone tell me what it is that sets this 
behaviour, and where it can be changed?

Thanks

Anne