thanks for the attention. I have opened and cleaned it out after the blobs started and ruled out the dust blobs. Im pretty sure its the polarizers. It has well over 3000 hours and started going off with the cyan "areas" around 2000 hrs before I tried changing bulbs. I run it conservative and its over 15" from the ceiling, and well away from the rear wall. I'll have to recheck the individual channels as I don't remember checking. I probably did, but in any case various window patterns, ramps, steps etc, all have the blobs. I did have it all apart seeing if I thought I could do the polarizer change myself, but decided that it is probably not worth it. It looks nothing like IR afaics.
I am interested in the inorganic panels but what about different, better bulbs as well? I fear I have to get back to "dual tv's" - pj for movie night and a tv for regular viewing. The problem is that regular viewing has to be HD and good. Having both gets pricey.
Anyway, sorry, venting, frustrated - good to see you still drop by.