Shadowprint on Epson Stylus R265

I have an Epson Stylus Photo R265 printer. Has worked almost 2 yrs without ANY problems. Now CD printing gives me headaches: it seems to print each image twice with a 5mm overlap on the disc.
Normal paper printing is just fine, no problems at all.
I print with the official Epson Print CD software. But when I print from Adobe Photoshop: same bad result. Printersoftware and driver reinstalled. No luck either.

Anyone any idea what might cause this? Maybe the lens which detects the CD printing-tray needs to be cleaned or something?
Hope anyone outthere can help me!:sad::sad: