Just thought I'd make a quick post for any fellow newbies out there just incase they're experiencing any similar problems.
I've recently got a new mac and downloaded the latest MAMP 2.1.1 do get kick started for all my Drupal development. Generally everything was okay when transferring D7 sites across from the old machine (MAMP 2.0.5) to the new machine running the new MAMP (2.1.1) but then I started hitting a lot of problems when delving into my sites. This is included frequent and various Drupal errors and most recently white screens of death on certain Drupal views that had previously been unproblematic on the old system. Anyway to cut a long story short (and many hours wasted) I've realised that MAMP 2.1.1, using version 5.4.4. is the problem and after going into the PHP preferences and changing it to 5.2.17 everything's working as it should.
I'm sure to the knowledgable people out there that this might be a pretty obvious post but I just thought I should mention it just incase.