HM,
You are adding much to the discussion and have interesting things to say. Would you mind making a signature with your first name? It's hard to address you with your nick.

I don't think you can trace it. My weakest computer, a five year old machine with 1GB of RAM using an AMD Athlon Dual Core 3800+ and a Seagate 7200 rpm hard drive on Win XP is nearly instantaneous. So 1GB vs 8, The AMD processor vs my Intel i7s, the Seagate vs 240GB SSD drives, and WIN 7 Pro, and it is two to three times faster on average.
I have pretty good information that it is not Crystal Reports that is the issue. It is the fact that the code had to be changed to accommodate the new Crystal Reports.
What I wish I knew, and it sounds like you would know, is the Crystal Reports necessary? Is it being used for MU to track data? I can't recall if it was in 5.0.29. It seems like it would have been if code had to be changed.
Most software companies or especially those that come out with huge products such as an OS or an Office Suite with list what it is compatible with. I am sure AC has a fairly decent lab for testing and would have XP and Vista and Win 7, etc. with all sorts of combinations of hardware and software. I certainly hope they are using two prototypes such as XP Pro and Win 7 Pro and not adding anything and simply only changing the resolution.
Then again, it's not like they can say, "Let's try adding Adobe here and Firefox there."
AMD Dual Core 3800+