Could be a front wishbone, either side, or anti roll bar bush knackered.
You can have visual inspection of these, but to really check you will need to take a metal bar to them and see if there is any movement in them.
If you want to bring it to me, I will have a check, and if it's something garage has left loose, i will give you photographic evidence to take to garage.
Have a look underneath and see if you can see anything obvious that is loose.
Also check wheel nuts are tight.
Edited by BurgerChips (19th Sep 2012 10:00am)