I have a user who has several PST files 2GB and below and one that's 12GB in size. I've tried multiple times to import it. It runs through "successfully" but the ONLY folder that appears is the Deleted Items folder (and even that is incomplete when I compare it side-by-side on a PC). The PSt works absolutely fine on a PC.

I called MS support and after explaining the situation, the negineer put me on hold for a few minutes. When he came back, he siad that it is a known issue with '11 that any PST larger than 8GB will not import properly and they "are working on a fix." I find that hard to believe, given the suite has been out for over 2 years now.

Anyway, I couldn't find anything about this online, so thought I'd sahre my experience. large PST files are, unfortunately, becoming much more of the norm.