Not just CorelDraw files!
I'm a software developer. I've always kept my development files on my Mac OS (for several reasons), and simply when opening, they open in Parallels - and this has been beautiful.
Now, however, after the upgrade, my development files get irreversibly corrupted! I am forced to completely alter how I do my work, for fear of destroyed code files.
I lost many many days of work, because you don't notice the corruption until you attempt to reopen the files!!! Complete insanity.
My files getting corrupted (only ones I've tried, before I stopped killing myself and my data), were Visual Basic 6 files. I have no idea if other file types have this problem, alas, seeing CorelDraw files makes me think so! The Visual Basic files in question all had a visual component, form files with controls on them. Plain text only files, like class definitions, do not have this problem.
I can recreate this problem in about 5 minutes... if anyone cares to see it happen...