Hola Maria.
I applied in 2005, so I've been patiently waiting 2 years longer than you.
Where did you apply? There's a lot of backlog in many countries, some are worse than others, it's just the reality I guess... Bureaucracy exists everywhere.
But the good news is that the Canadian govt is trying to accelerate the process:
http://www.cic.gc.ca/english/department/media/releases/2009/2009-10-30.aspSo... let's continue hoping that they look at our papers some day.
Buena Suerte!