What's your system config? It takes me around an hour or so to install Ubuntu, though I don't really know about dapper cos I just did dist-upgrade for dapper. That took me a whole day . It seems the new live cd techinque of dapper maybe a bit buggy cos there are a lot of complaints though I can't say for sure.
If you're tired of waiting for installations, install gentoo by chroot'ing from a live cd . Just carry on with your work while gentoo installs in the background.
If you're tired of waiting for installations, install gentoo by chroot'ing from a live cd . Just carry on with your work while gentoo installs in the background.