I use a digi 002R - although more conventionallly to run PTLE (and in Snow Leopard)...
re: selecting 002R (or mbox) as the computers out for system sound and itunes etc.
- this has ALWAYS been a total pain in the ass for me - sometimes it works when you select
it, sometimes it works after selecting then restarting, sometimes not at all... I gave up
and now take a small jack out of the computer into the ALT SRC on the 002R, which is
actually better for me anyway as I get a physical switch on the 002R and I can route the
laptop straight into PT using the input 7-8 option.
Re the other problems - it
might be useful to know more about what is going wrong? Particularly if you have just
changed OS, or just bought the 002R second hand - mine is stable now, but I know that they
don't have a very good history, issues-wise.
Anto mo Ninja, Watashi mo Ninja