Garage Cabinets, Garage Storage, and Garage Organization

at first i didnt notice but now ive started to hear a thump from the rear passenger side of car as i investigated using the net its come to my attention that theres something wrong with the bolts on the sub frame. im form kent please let me no if you have had any probs like this with e46 and if you had it fixed who by? also if the problem could be something else, please advise, thanks.