I've posted on here about a nasty noise and people didnt seem to take it seriously lol.. 'oh they all make that noise' etc...
Well I've taken a sound clip on my phone, and while it makes the sound a bit metally, when really its a grinding noise, I think it reitterates the possibility of a major f*ck up on my bike...
http://media.putfile.com/SV650-Cam-Chain
By the way it says cam chain cos thats my guess. Hope this works!