safari keeps quitting

Safari keeps quitting on me.

I have a clean install of Mac OS10.6.8 on an older iMac (3.06 GHz Intel Core 2 Duo).

I migrated data and some apps from an older iMac.

I have no updates left to do.

I removed all web data and cleared all cookies. I have no extensions.

Google is set to my home page.

Safari just quits, if it is being used or not.

Any suggestions?