Rolling all of your debts into a single loan is a good idea - in theory. In fact, it can be a great idea.
Jean ChatzkyA consolidation makes sense only if you can lower your overall interest rate. Many people consolidate by taking out a home equity line loan or home equity line of credit (HELOC), refinancing a mortgage, or taking out a personal loan. They then use this cheaper debt to pay off more expensive debt, most frequently credit card loans, but also auto loans, private student loans, or other debt.
Jean ChatzkyTurn down offers for new cards or credit line increases on your current cards. Credit's tight, and chances are, you're not getting many offers anyway. But if you do, remember that the less credit you have available, the less trouble you can get into.
Jean Chatzky