amp envelope

Please Help. I have an mpc 1000, and when I adjust my attack, and/or decay I hear the sample repeat faintly towards the end of the original sample. If that weren't bad enough I can here the tail end of a completely different sample that is assigned to a different pad. I don't have voice overlay on, and I restarted my mpc and went straight to the amp envelope to try it again but it is still happening. I don't know what the
F%&k is happening. Please anybody. Grenadefist P.S. I still use V 2.10

hehe its a bug i read all that u said but the first sentence ya its a bug in akai os. nothn u can do about it and they wont fix it either

Are they all plagued with this same bug?

Thanks for the help. If I go with the JJ OS will it fix this. Is it worth it?