What is your Model and amount of RAM, SoftballMominVA? Crashing 1-3 times a week is definitely atypical for Mac users. Can you isolate what you are doing when the crash occurs. Is it a full system crash (everything locked or kernel panic) or just an application crash? The slowness of Safari is also very atypical. I'm thinking you may have a RAM problem, which is not unheard of.
As far as what kind of crash it is — it's the kind where the little rainbow wheel comes up and the mouse, keyboard and touchpad are unresponsive and I have to hold down the start button for 10 seconds to restart.
I've taken it in to the Mac bar 3 times and each time they seem to find some little thing that needs to be updated or some tweak. What ends up happening is that my Mac does what it wants to do it seems and I just live with the problem. It's no worse than my old PC, but certainly not better.
In fact, it locked up as I was doing this post a few minutes ago. At the time I had FR open and Drudge and a Flicker page. Seized up, shut down, and restart.....same ol, same ol.
Any suggestions, I'm happy to take them