LOS ANGELES (Reuters) - In May, Alvin Clavon received a foreclosure notice on the simple, Spanish-style house in South Los Angeles that he shares with his wife and three boys. Clavon bought the place in 2003 with a fixed-rate loan. They painted the walls, fixed the yard and made friends with the neighbors, who let the Clavon boys pick their basil. In 2005, he worked with a mortgage broker to refinance his home with another fixed-rate loan. But on the night before signing, the family was offered an interest-only, adjustable-rate mortgage. Clavon, a 35-year-old executive assistant at a bank, said...