OSX 10 was dreadful it was only until 10.1 came out was it usable. You couldn't even burn disks with 10 and it crashed a lot.
I disagree. OS X was still completely useless until Panther - we used to joke about how bad MS' code is and yet Apple manages to release even worse products release after release and were betting on how long they will stay alive if their music and gadget business does not take off... then came Panther and I was very surprised, they managed to release an actually usable OS, with most atrocious bugs fixed, new features working at a reasonable speed etc.