You can take up to two years to realize that you should lock in to a 5,7,10 year fixed rate mortgage as we won't see rates like this again for a long time. Interesting article linked below where The Bank of Canada is hinting that rates likley won't be going anywhere in the next couple of years. Of course no one knows for sure but on this issue I would listen to the Bank of Canada.
http://business.theglobeandmail.com/.../Business/home
The Bank of Canada is mandated by law to keep inflation advancing at a rate of about 2 per cent a year. That target won't be reached until the third quarter of 2011, the central bank said.