We have some clients using SugarCRM 5.5.1 since long time. All if these instances are heavily customized and customers are not willing to take any risk of upgrading the version.
Our LAMP stack is php 5.0.26, apache 2.2 and mysql 5.0.77.
I would like to upgrade php version to 5.3.8 and mysql 5.5.16.
Would this upgrade impact our sugarcrm 5.5.1?