..."integrated Intel graphics and sound, Atheros wireless, ATA disks, no other fruity hardware".

The Atheros Wifi is a Netgear card, by the way.

ETA: It seems that a pretty bog-standard installation (I've got Roundcube, PostgreSQL and Openfire packages in addition to the usuals, but they don't count for much disk space) comes out at a rather svelte (by comparison with OS X and Windows) 2.7 GB.