Hi Martins,
There have been reported problems with the MacBook Pros and ATI cards
that lead to hard system freezes. This was reported with the OSG 1.1
release and OS X 10.4.7 as well. I think the suspicion was that a
certain gl command that osgText was calling caused the freeze
(glTexSubImage2D or sometihng?). This might be why osghangglide works
but the others do not (because they render text onscreen). You could
try running osghangglide again and pressing 'h' to bring up the help
display and see if your system freezes again. (If you can ssh into
your system, you might see if the system has hard frozen or if you can
kill the process.)

Anyway, since this appears to be a (serious) OpenGL issue and not OSG,
you probably need to wait for a new set of drivers. This means you'll
need to wait for 10.4.8.

I met a few OSG users at WWDC that experienced this problem. I think
they actually managed to hunt down the ATI engineers. I hope this
means ATI (or Apple) will be coming up with a fix soon. Meanwhile, you
might file a bug report with Apple on their bug reporter. The more
people that complain, the sooner it gets fixed. (It also might help
give OSG higher visibility within Apple.)

-Eric
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