Outlook 2007 Troubles?

We’ve got Exchange SBS 2003 with Outlook 2007 deployed. We also have our share of iPhones and public folders, so we started using FolderMirror, which is working pretty well.

However, the two of us who installed it, have seen outlook start syncing with the server a LOT. I have a pretty fast workstation, so it doesn’t slow me down, but his is the last generation so it’s dragging.

Any ideas as to why? I’m guessing it’s folder sync trying to keep things up to date, but he disabled folder sync and it kept doing it.