possible S1 IS sensor problem? not the famous one

[ashy]

hi everyone, I did a lil googling on it, it seems to be caused by something called "sensor blooming", it looks really like the optical fringing, but it's not.. I can tell... the camera just doesn't behave like before.. it just happened suddenly 1 day... for instance, the "fringe" doesn't scale with aperture size.. & most evident on white color part.. here's a pic:

1/6s, F3.1, 17.27mm (lens = 5.8mm-58mm), ISO100
EXIF is still preserved for any possibly needed reference


thanks in advance