Forum I'm so confiused, do I upgrade or not?
 

Last week I applied the patch files, my forum is now running vBulletin 4.0.2 Patch Level 2.

Today I notice that there has been vBulletin 4.0.2 PL4 Released?

I have read the announcement and obvious dont want to leave my forum vunerable.

Do I need to patch up to PL4?