I am working as a Graphic Designer, so I use Illustrator very often. Lately it happens a lot, that Illustrator shuts itself down randomly. Guys this isn't fun...

I am working on some projects for 2 -3 hours for nothing. Nothing is saved, not even if I do it manually from time to time. It's like playing russian roulette - will I keep my file? Won't I? Will I finish my project in time or will I have to start over AGAIN?! What is going on?

If this keeps happening I am afraid I won't be able to use Adobe anymore. I've lost so much time already that nobody is going to pay me for...