all with c. 10gb virtual hard drives and one virtual processor (on edit: this virtual processor is 2.8 ghz)
one with 128 mb RAM, one with 256mb RAM, one with 512 mb RAM
128 mb RAM -- desktop wallpaper came up! waiting ... waiting .. waiting ... screw this
256 mb RAM -- desktop wallpaper came up! notification internet connection found! install screen came up! clicked install ... waiting ... waiting .. waiting ... screw this
512 mb RAM -- desktop wallpaper came up! notification internet connection found! install screen came up! clicked install: preparing to install screen came up! clicked forward: allocate drive space screen came up! clicked forward: clicked install now: Time Zone screen came up! clicked forward: keyboard layout screen came up! clicked forward: account info screen came up! filled in info and clicked forward: installation slideshow began! various messages for the next 20 minutes or so. installation complete message! restart: grub screen up! select ubuntu: login: system monitor says i've used 2.3 of my 9.8 gb virtual hard drive; firefox works. total time about 30 minutes
Also tried lubuntu 10.10
128 mb RAM -- language screen came up! ignored ... desktop wallpaper came up! desktop came up! clicked install icon ... waiting ... waiting ... waiting ... screw this
256 mb RAM -- language screen came up! ignored ... desktop wallpaper came up! desktop came up! clicked install icon ... waiting ... language screen came up! clicked forward ... waiting ... waiting ... waiting ... screw this
512 mb RAM -- language screen came up! ignored ... desktop wallpaper came up! desktop came up! clicked install icon ... waiting ... language screen came up! clicked forward: preparing to install screen came up! clicked forward: allocate drive space screen came up! clicked install now: Time Zone screen came up! clicked forward: keyboard layout screen came up! clicked forward: account info screen came up! filled in info and clicked forward: installation slideshow began! various messages for the next 15-20 minutes or so. installation complete message! restart: grub screen up! select ubuntu: login: system information says i've used 2.0 of my 9.8 gb virtual hard drive; chromium brower works. total time about 30 minutes
http://lubuntu.net/http://linuxmint.com/rel_isadora_lxde.phplubuntu feels a bit snappier than ubuntu
I might expect the recent ubuntu and its recent derivatives to behave similarly: you probably don't want less than 512mb RAM for installation