PC's are not compliant.
Macintoshes are somewhat less likely to fail than PC's, but it's a matter of degree.
Here is a posting from Karl Feilder, who specializes in PC's and y2k. The recent mailing missed the point and there were even a few non-truths. I doubt if PC programs will be either. The key point that we have missed is that any program which accepts input, output, or internally calculates with anything other than YYYY or CCYY may be capable of causing problems in the way that users use it. Please can we now all move on.