EFFECTIVE December 23, 2010: If you are submitting a language test with your application, the results are now valid for 2 years from the time you took the test, instead of 1 year. This change applies to Federal skilled worker, Canadian Experience Class and Business Class Immigrants (investors, entrepreneurs and self-employed people).
Check the below link;
http://www.cic.gc.ca/english/immigrate/index.asp
Immigration Forum
