Thump from the engine low end...
 

Okay on my ride home this evening I heard what I can only describe as a thump from low down in the bike... due to bad weather/trip to the UK the bike had been stood for about 10 days without being ridden. On the way to work this morning all seemed fine and when I got home I checked oil level and that was where it should be halfway up the glass so she is not burning oil...

At the time I was decelerating through traffic clutch was in and I had just released it... aside from that everything seemed fine I accelerated from the lights and all was fine as well...

Anyone any ideas??? I will be taking her out tomorrow carefully to see if I can replicate the issue...

She is a 2003/4 model...

And it did not sound metallic... just worried what it could be... and probably overthinking it...