Hey guys, On a late 2012 iMac 27" here in Australia, running OSX Yosemite 10.10.2. I have an Apple USB keyboard with the numeric pad on the right hand side. Weirdly, the keys on the numeric pad all work except for the ones in a line straight down the middle - that is the 8, 5, 2 and = keys. I have no idea how I did this, nor how to fix it. Just to be clear - my numeric pad isn't locked, cause most of the numbers work, it's just those four keys. I've also checked that Mouse Keys isn't on, so that's not it. I haven't spilled anything on my keyboard, and I've tried switching USB ports on my iMac to no avail. Unfortunately don't have another computer to test on. Any ideas? Thanks.