Yes, you are correct. Sorry about that. The model is a Sony KDF-55E2000 and it takes an XL-2400 bulb.
It has a DVD, Blue Ray, an X-box, a Wii, and satellite w/ DVR connected to it. I know that this happens with the DVR and the X-box but I do not recall if it happens with the other inputs.
Yes, when I access the TV menus it leaves their ghost image on the screen when we return to regular viewing. My son says "it leaves really cool designs on the screen" when he is playing his X-box games.