Whatever you do dont upgrade your current PHP 5.2 to 5.3 as it will mess up Apache on Plesk.
If you do this by mistake then make sure you downgrade PHP to 5.2 (yum downgrade php).
But note that this might remove plesk components, so you might end up reinstalling plesk.

July 7th, 2010 2:16 am
How about Plesk 9.5.2? Can it support PHP 5.3.2?