After multiple calls to applecare, and multiple "fixes" on this and other forums, as well as a total erase and clean install of snow leopard the issue persisted. Although, with snow leopard browser does not crash, but flash player will close and not work. Finally, called applecare back to complain I had a hardware problem. This time the rep suggested I change the name of the internal hard drive which was still the default "Macintosh HD" to something else and the problem was solved. He could not understand why predecessors had not suggested that. Nor could I ...after many hours on this issue.