i already posted this in the d NG:

I gave beta 3 on my win32 dev machine a try today and noticed 
that building vibe.d (a dependancy in almost all my projects) 
takes noticeably longer to built. observing the process shows 
that beta3 consumes almost 1.5GB of RAM while dmd 2.064 'just' 
uses 1GB.

I am not so familiar with the compiler code and what could be causing this ? can anyone else confirm this ?