Ever since we upgraded our software to OSX 10.9.2, we cannot use the numpad on the keyboard. We have a wired keyboard, our 2008 24" MAC desktop and have experienced NO usability with the number keypad as well as EXTREMELY SLOW response time for MOST applications.
P L E A S E FIX THIS PROBLEM!!!!!!
We also can be typing along, and suddenly all the keys become CAPS even without pushing the caps lock button, and you can't get them back to lower case. Makes it really difficult when logging into a website requiring user name and password that are case sensitive.