Installing hotfix Build 4.1.3441.0: KB2832389

Hi,

 I'm performing a green installation of FIM 2010 R2 and am looking at installing hotfix Build 4.1.3441.0:KB2832389  

 I've seen issues described by the hotfix in my lab environment, but not in the production one (yet). I have two questions:

1. Do people generally install these?
2. what's the installation process when you split the FIM service, FIM sync service and SSPR portals over 3 servers? Is the hotfix needed on all three?

thanks

IT Support/Everything