i have browsed other posts, general concenus was NOT to upgrade to php5.3.*
however...
i have a module in a Drupal installation that requires 5.3.*
it is one module out of all modules for all my 10 + Drupal installations
so, the dilema is, i risk breaking all my Drupal installations because some older Drupal modules won't be able to run on 5.3.*, so, obviously not wise to go ahead at this point
however, i will need to run this particular module, somehow and some point and also upgrade to php 5.3.*, because this is the way it will go, especially with D7