Please read the FAQs before posting. Otherwise a lot of people waste a lot of time answering questions which can be easily be resolved with a little reading and searching.
One of your questions is answered by reading this faq. There's a faq which deals with general slow-down / instability issues which may resolve your copy problems.
We also ask that you don't post multiple questions in one thread.
As for Opus causing a blue screen when you exit it I haven't come across this, although when you say "when I exit Vista" are you running Opus under some sort of Vista emulation on Linux ?