Currently, 3.08GB.

I have a number of old animation files, videos, and props created for others in there, taking up space. I'm a firm proponent of incremental saves; I can easily have 15 versions of a single file before I'm finished. My most recent animation project ended up with 23 PZ3 files, due to my endless tinkering with the cameras.

When I throw the junk out, I'll probably be back down to 850MB or so. I "clean house" every two months.