neighbor goes in on neighbor...,

WSJ | Few things agitate Sid Schulman, who often shoots the breeze with other retirees and flirts with women friends at their condominium complex here.

But it galls him when neighbors stop paying their mortgages and maintenance fees, and leave the cost of community upkeep to others. "I am paying for these guys," said the 75-year-old sitting poolside, a diamond stud in his left ear.

Last year, he took matters into his own hands. Near the mailbox of each condo building he posted a list of residents delinquent on their maintenance fees, with the message "Pay up or move out" and the same in Spanish, Pague O Mudese. He also tried, unsuccessfully, to get the cable company to cut off service to nonpayers.

The public shaming angered some of those named. "You know where I live—come and tell me that to me face," said Lorena Garcia, 36, who lost her job and ability to pay.

The storm that struck the housing market has strewn many casualties—lenders, builders, real-estate agents, mortgage-bond investors.

Add to the list the comity of certain communities where residents live close together, some of them paying their mortgages and homeowner-association fees, and some not.

As banks slow foreclosures amid concerns about sloppy record keeping, some delinquent homeowners get to stay put even longer without paying. The delays are further inflaming some neighbors who consider that unfair.