Have you tried a factory reset? (Master reset, deleting all, under Settings>Privacy>Factory data reset). If you've had your phone for less than a year, than it's covered under warranty and you could bring it to a Telus store to have it sent out for repair. You can also downgrade your software, but Telus and Samsung does not support it, so it's at your own risk. I found a link that explains how http://forum.xda-developers.com/showthread.php?t=1289712
