Well I'd stop copy and pasting illustrator into inDesign straight away. That can introduce problems. I'm not a fan of that workflow, others are, but I don't recommend it.
Placing the files is the preferred method
What version of InDesign are you using?
If it's CS5 or later go to Preferences> Interface and change the Live Screen Drawing to Delayed
See if that helps
Also go to View>Display settings and choose "Typical".
File size might be causing slowness issues due to overhead in the indesign file.
Try doing a File>Save As and save it as a new file name.
If that doesn't fix it then I'd try
File>Export>InDesign Markup Language (IDML)
When you open that exported file in INdesign it will open as Untitled
That might speed up the flow
You might also check your preferences and in
Preferences>Display Performance> set the Vector slider to the middle.
Thanks for the Tips Eugene.
Don't worry, I always import files into Indesign. Never copy and paste on jobs this size.
Display is set at 'Typical'.
I'm running CS5 so I'll try your suggestions when I'm back at work tomorrow.
What I find interesting is I have a second machine a MacPro 2.4Ghz Intel Core Duo and that seems to handle the file fine. My main machine is a Quad Core desktop which I got a couple of year ago and it's slower. Thats why I think it's something to do with indesign on the desktop.
It might be that preference for Live Screen Drawing. Or the Display Performance in the Preferences also.
Check them all out. There's something different on one machine I reckon.