Tumbleweed is a bit of a spooky name for a distro implying that a gentle breeze sends it, but y'know
Linux Mint as someone suggested, I've ran a long time ago for college on an ancient laptop, and it's an extreme stable OS, similar to Windows 2000 Pro. I can't remember it crashing or freezing even once on me, and the Thinkpad T42 has an anemic processor., which I ran with the Conservative Governor