Time Machine & large backups

I recently set up TimeMachine with a 750 external hard drive, but it's been filling up very quickly. Even though I only have a 150GB primary drive (mid-2009 13" MBP), It's managed to fill up 350 GBs in the last couple days. I also noticed that each time it backs up, most likely once a day (I leave the drive disconnected most of the time), it seems to do about 14 GBs each time.

I rarely change files, except for Mail App, which I use with Gmail (IMAP). I also have quite a few photographs, but doesn't Time Machine only backup what has been changed?

Should I not have it backup Mail?

 

No one?

 

Duh... dude. Thanks so much for mentioning that. I use VMWare and always have a W2K IIS server running, plus an XP VM for remote desktop, plus a couple other VMs for testing. That makes sense. I'll exclude my VM folder.

I'll let you know if it works.

 

Yep. Just did a backup and it's only ~200 MB for the last two or three days. Probably just email, which sounds about right.

Thanks!