I'm new w/ SilverStripe and I've encountered problems w/ class namespacing. I was following the tutorials in the book "Silverstripe The Complete Guide to CMS Development" and got this error:
Warning: There are two files both containing the same class: 'C:\wamp\www\silverstripe/mysite/code/Member.php' and 'C:\wamp\www\silverstripe/sapphire/security/Member.php'. This might mean that the wrong code is being used. in C:\wamp\www\silverstripe\sapphire\core\ManifestBuilder.php on line 461
Maybe atleast silvestripe can implement guidelines w/ it especially when creating new modules to avoid the said error.