I still have a house in the US that I've been renting out since March 2010 (vacant since January 2010). My tenant has a lease through June 2012, and then I hope to sell summer 2012.
I rent through a property management company, which has been pretty pain-free. They take a % of the rent, charge me for any expenses in that month, and deposit a check in my (US) bank account every month for whatever's left. It's barely enough to cover my mortgage, but not my property taxes or insurance.
I don't want to be a long-term landlord, and have heard few stories of that really earning money for people (unless they're already well-off enough that the payments/costs/repairs are negligible, or the rental market is fabulous). So while it's tempting to keep the house long-term, pay off the mortgage, and have "free" money coming in, I remind myself that the furnace will break, the pipes will burst, and the roof will need replacing, too, which would wipe out any "profit" for me. Thus the plan to sell in 2012.