play in right brake disc

have noticed a rattle from the rear of my bike since i've had it (past few days). had a look earlier and it's the rear brake disc wobbling against the pads. is this normal?? there's a few mm play in it. never noticed this on other bikes but that may be because they've never vibrated so much as the husky!

cheers

edit: this should say rear brake disc! all blots are tight too!

right justv read another post confirming this is normal. please ignore!

normal if it's a 610 with a semi-floating rotor....not normal if it's a 630 with a fixed rotor

Cheers fella! Was quite worried when I discovered it!