Well, if there was a decent setup/configuration tool for XFree, it would be better, but honestly, the only time linux ever "crashes" for me is really when X dies and takes my keyboard with it... Sometimes I''ll just telnet into my computer from another to kill X, but that would involve going all the way downstairs, and with journaling filesystems, it''s just as easy to restart
It''s amazing how fast linux boots up compared to windows. It literally takes maybe 1 minute, including loading the kernel, logging in, and starting X up.
As for Slack''s install size... There''s something called ZipSlack which was meant to fit onto a 100 MB zip disk for new linux users to try it out, so it is possible to have a very basic system in under 200 MB. In fact, there still are some linux distros out there that fit on a floppy or two. Why you would want this, I don''t know, but they do exist.