He replied to a post in the Slackware forum back at the end of January telling folk he had terminal cancer. No idea how things have progressed since then but I know he was already very unwell at that point and I've not seen him crop up since that time. I imagine he's either spending his remaining time with his family or he's already at rest. Either way, losing Steve is a huge blow to the community. Wish I could have met him and thanked him in person for his videos. They were so helpful to me in the early days of running Slackware.