(Lake Oswego, OR)  --  The Lake Oswego Fire Department says two homes have been evacuated because of a mudslide off Highway 43.  Officials say a previously-undetected water-line leak caused mud and debris to slide over the weekend down a hill from the home on Upper Cherry Lane, south of downtown Lake Oswego.  The debris ended up against a house down a hill on Meadows Drive and the home was evacuated as a precaution.  Crews will be on the scene this morning to assess the damage.