Getting Message: "Startup Disk is Full" on a brand new 1TB Mac
My Mac is 4 months old. I have only installed the iWork package and some family pictures (no movies or other media) and yet, I keep getting the message that my startup disk is full. When I dig deeper, it tells me that i have only 4GB of free space left and that I over 550 000 files on the computer. How is this possible? Are there any known viruses that do this? How do I clean my MAC without losing everything that I want to keep (like my photos) nor having to take it in to a Mac Store? (I've already emptied trash, cache and history). I'm new to Mac, so, I am not quite sure how to troubleshoot my problems.
Any help would be appreciated.
iMAC IntelCore i3, Mac OS X (10.6.6), 3.2Ghz, 1TB, 4GB RAM