That's what I was afraid of. What steps would you recommend? Take it to the Apple store? I need my laptop every day for work, so I was concerned that it might take a long time to fix...
Honestly it's hard to say.
First off I'd try just reverting to whatever OS you were using before Mavericks. Unless for some reason you need to be running Mavericks if you can run an older OS without crashes then there isn't really reason not to.
If Crashing starts happening after reverting to an older OS or you just need to be running Mavericks for some reason I would definitely recommend taking in the laptop in if you can't diagnose the problem yourself.
Since there are a lot of things that can go wrong it's hard to say how long fixing it would take. For example if it was just bad ram or something you could swap in some new ram in a few minutes (assuming it not one of the laptops with soldered ram).
It's also entirely possible that it's not a hardware issue and just some app you have installed or preference causing problems but that's unlikely if it's happening after a fresh install.