Google Chrome keeps freezing my macbook?

[Ohio]

I have a 4 year old macbook (not pro) and I'm running leopard on it. Sure it's pretty jammed up with data, I've tried deleting lots of stuff but nothing is helping anything.

I love Google Chrome, there's never any annoying short-term freezing and everything is great, however just recently Google Chrome has been mega freezing, to the point where my whole computer freezes. The only way out is to hold down the power button, restart the macbook and try and desperately quit google chrome while it autostarts. If the page comes up, I'm screwed and have to turn off my computer again.

So far when it does this I've just been deleting Chrome and re-downloading it via Safari, this eliminated the problem for a few weeks but that now no longer works.

I've also tried using Firefox but I hate it, it lags and freezes and certain websites won't load, it won't even let me view Yahoo Answers results via Google. It's driving me insane. I used to use Safari as well but anytime I tried watching Youtube it froze.

I've run my current Software Updates and I'm definitely downloading the latest version of Chrome since I'm pretty sure I've downloaded it about 15 times in the last week.

Please say someone has some answers and tricks, I'll be seriously lost without it.