VM issues

Hi all,
I've recently tried to install grml with parallels (on a macintel),  
and my attempt was unsuccessful, it might be a problem with parallels,  
but I was wondering wether anyone reported issues with that  
configuration?
PS : I have installed a fedora on my external HD since then, but I  
don't like it as much. And grml saved my professional life once, thank  
you for your nice distro. BTW, I will provide more info if necessary.