If the keys are doing a 1-0 sequentially
e.g. like if you hit 'A' 10 times it goes, 1,2,3..etc
or
you hit 'Q' 'W' 'E' 'R' 'T' 'Y' and it goes 1 2 3 4 5 etc

this is cause by a program called Guarded ID, its a keylogger protection program.
http://www.guardedid.com/support_faq.aspx#EBADA