Macbook Crashed

Hmm, just finished the update to the latest version of Safari. Afterwards, I was doing some work and then everything suddenly froze. A few seconds later a screen came up saying that I would have to hold down the power button to restart my laptop. Upon rebooting it asked to file a crash report to Apple, which I let it do.
This is the first time ever that I’ve had a Mac actually crash hard on me. Hopefully this isn’t a sign of things to come.
I’d hate to use this as a reason to have to upgrade my laptop. It still works great, but it is starting to show its age. One of the clients that I’m working with at JBM Labs has a rather dirty office due to the type of work that they do and doing troubleshooting there with my white Macbook has caused quite a few stains on the keys and surface of the laptop. I’d really like to get one of the new Macbook Pros, but just can’t justify the price right now.