In some ways I consider Slackware to be a good training distribution. I run into a lot of Linux users who are distribution dependant because the know how to use a wizard, but not configure the real files that control things. Hence the argument mentioned previously about Slackware not being a very useable distribution.
It also depends on your usage profile. If you want a system that has 1000 programs that you never run, and use 5 new ones each week, then stick to a mainstream distribution. If you want to install a base system and put only an extra package or two on your system, then slackware is ok. Definitely not the 'cutting edge' of distributions, and best suited for machines that don't have X on them (if you can imagine such a system) :) -- SLUG - Sydney Linux User Group Mailing List - http://slug.org.au/ More Info: http://lists.slug.org.au/listinfo/slug
