The most noobish noob thread ever..

spamming the attacks shouldn't be a problem normally...

for example if you press 5 times 1 while two 1's are required, it should still come out.
Have you tried testing it with another pad, cause right now we can only make assumptions if we don't know if you've tried it with another pad...

It might be you, the TV that delays the inputs (lag TV's , one of the reasons why plasma tv's suck ass when playing fighting games) , or the more common problem, the game pad.