It's interesting that they responded at all, but IMO it sounds like a canned response. However, as Bruce pointed out, it's not really their problem - it's a combination of factors that seem to trigger it, most of which are Microsoft products (ipoint.exe,
IE9, etc). They really need to look into what's causing it.
It seems like, for the most part, ipoint.exe is the biggest culprit. There can't be that much to that product, so figuring out what might cause it to interfere with Aero Peek shouldn't be too difficult. Probably some kind of shell-level hook that's waiting
to pop up a special menu when the middle mouse button is pushed, or something of that nature.