Fuji HS series - marking on lens (1 Viewer)

Anyone out there had problems with Fuji HS series cameras showing marking in centre of lens? Had a HS20 for 18 months, and noticed 'smudge' on centre of lens, contacted a few other owner who have experienced same problem, including on new HS50 - suggested that internal lens is touching and marking outer lens. Anyone else had this problem?

I've just had my Fuji HS20 EXR returned fully repaired for free (despite it being out of warranty) after a couple of emails to Fuji HQ Tokyo.