More banks raise red flags; white flags next?

Which bank will be the next to fail? Of course, it's impossible to know for sure. But with losses mounting, some lenders have been forced to admit they're in dire condition.

Guaranty Financial Group (GFG) made headlines late last week when it said it was "probable" that regulators would seize its Guaranty Bank subsidiary after writing down more than $1.4 billion in mortgage-backed securities. And Guaranty isn't alone. Banks large and small are raising red flags.

Here are a few banks that have said they're in trouble: