Safari quits "unexpectedly"
My friend has an 21.5 iMac (2007) with 4GIG Ram. He just "upgraded" from Leopard to Snow Leopard 10.6.8. During Hurricane Sandy, he briefly lost power and his iMac "blinked" on and off.
He and wife have separate "user accounts." When his wife, logged in as herself, tries to open Safari, it quits "unexpectedly."
When he is logged in as himself or as a "guest," Safari opens and works as usual.
I suggested he download "Firefox" and "Chrome." He did and when his wife, logged in as herself, both apps can browse the internet. Safari still "quits unexpectedly."
What could I suggest to him to get Safari working?