Any virtualized application

I have noticed for some reason when you try to access certain

functions of virtualized software thinapp copies the dat file from the

installed location to the sandbox. This is fine for some apps but if

you start getting into the bigger application for example Flash CS3 or

Office 2007 coping a 1.6 + more gig files to the sandbox takes some

time, and it looks like the application is not responding.

Is this necessary? or is there a way i can stop it from doing this?

Thank you.

Vicken.