Not to step on any toes, but this is exactly why I brought up the 'feedback' in this forum. This forum's description is:
"Let us know how we are doing and how we can improve our products and services."
Yet, I personally have been told a few times that my suggestions were not appreciated and the thread closed...all while making suggestions that could help others.
I think John is pointing out something that could be of benefit to IPS and this was the reason I brought up the thread because I had problems, thought I'd note it to IPS (again, following the letter of the forum) and others are having the same problem (some being able to fix it by making the same change I did...one that IMHO should be in the instructions if 5.1 and 5.2.0 are appropriate PHP environments).